memleak in byte_get_little_endian

```
==1418970==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x603000000150 at pc 0x0000005feafe bp 0x7ffd58788150 sp 0x7ffd58788148
READ of size 1 at 0x603000000150 thread T0
    #0 0x5feafd in byte_get_little_endian /src/binutils-gdb/binutils/elfcomm.c:148:33
    #1 0x5b29cf in process_mips_specific /src/binutils-gdb/binutils/./readelf.h:16773:33
    #2 0x57a391 in process_arch_specific /src/binutils-gdb/binutils/./readelf.h:19719:14
    #3 0x56522e in process_object /src/binutils-gdb/binutils/./readelf.h:20042:9
    #4 0x558bdd in process_file /src/binutils-gdb/binutils/./readelf.h:20480:13
    #5 0x558fc2 in LLVMFuzzerTestOneInput /src/binutils-gdb/binutils/fuzz_readelf.c:53:2
    #6 0x45bb53 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:599:15
    #7 0x4472c2 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:323:6
    #8 0x44cf66 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:856:9
    #9 0x476472 in main /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerMain.cpp:20:10
    #10 0x7f3dc6d52b26 in __libc_start_main (/lib64/libc.so.6+0x25b26)
    #11 0x423179 in _start (/root/oss-fuzz/build/out/binutils/fuzz_readelf+0x423179)

DEDUP_TOKEN: byte_get_little_endian--process_mips_specific--process_arch_specific
0x603000000150 is located 0 bytes to the right of 32-byte region [0x603000000130,0x603000000150)
allocated by thread T0 here:
    #0 0x52287d in malloc /src/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:145:3
    #1 0x66909c in xmalloc /src/binutils-gdb/libiberty/./xmalloc.c:147:12
    #2 0x5bf169 in cmalloc /src/binutils-gdb/binutils/dwarf.c:10230:10
    #3 0x5b16b5 in process_mips_specific /src/binutils-gdb/binutils/./readelf.h:16697:15
    #4 0x57a391 in process_arch_specific /src/binutils-gdb/binutils/./readelf.h:19719:14
    #5 0x56522e in process_object /src/binutils-gdb/binutils/./readelf.h:20042:9
    #6 0x558bdd in process_file /src/binutils-gdb/binutils/./readelf.h:20480:13
    #7 0x558fc2 in LLVMFuzzerTestOneInput /src/binutils-gdb/binutils/fuzz_readelf.c:53:2
    #8 0x45bb53 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:599:15
    #9 0x4472c2 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:323:6
    #10 0x44cf66 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:856:9
    #11 0x476472 in main /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerMain.cpp:20:10
    #12 0x7f3dc6d52b26 in __libc_start_main (/lib64/libc.so.6+0x25b26)

DEDUP_TOKEN: malloc--xmalloc--cmalloc
SUMMARY: AddressSanitizer: heap-buffer-overflow /src/binutils-gdb/binutils/elfcomm.c:148:33 in byte_get_little_endian
Shadow bytes around the buggy address:
  0x0c067fff7fd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c067fff7fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c067fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c067fff8000: fa fa 00 00 00 fa fa fa 00 00 00 fa fa fa 00 00
  0x0c067fff8010: 00 fa fa fa 00 00 00 00 fa fa 00 00 00 00 fa fa
=>0x0c067fff8020: 00 00 06 fa fa fa 00 00 00 00[fa]fa fa fa fa fa
  0x0c067fff8030: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8050: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8060: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8070: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
  Shadow gap:              cc
==1418970==ABORTING
```

src-openEuler/binutils

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