Fix #14038 (Simplecpp: update to 1.5.1)

[danmar]

No description provided.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[SChernykh]

@danmar
This change broke my CI. Here is how it works with 4e2b277 - it gets stuck on the first line, seems to be in an infinite loop:

user@pc:~/Documents/Github/p2pool/cppcheck$ ./run.sh 
Checking /home/user/Documents/Github/p2pool/src/block_cache.cpp ...
^C

Here's how it worked with 1d9ea2f

user@pc:~/Documents/Github/p2pool/cppcheck$ ./run.sh 
Checking /home/user/Documents/Github/p2pool/src/block_cache.cpp ...
Checking /home/user/Documents/Github/p2pool/src/block_cache.cpp: __cppcheck__=1;SIZE_MAX=UINT64_MAX;RAPIDJSON_ENDIAN=RAPIDJSON_LITTLEENDIAN;RAPIDJSON_64BIT=1;__SSE2__=1;__BYTE_ORDER__=1;__ORDER_LITTLE_ENDIAN__=1;__linux__=1;__x86_64=1;_M_AMD64=1;_M_X64=1;HAVE_BUILTIN_CLZLL=1;HAVE_GLIBC=1;HAVE_PTHREAD_SETNAME_NP=1;HAVE_RES_QUERY=1;MINIUPNP_STATICLIB=1;RAPIDJSON_PARSE_DEFAULT_FLAGS=kParseTrailingCommasFlag;WITH_MERGE_MINING_DONATION=1;WITH_RANDOMX=1;WITH_TLS=1;WITH_UPNP=1;ZMQ_STATIC=1...
and so on

The CI workflow I use is here: https://github.com/SChernykh/p2pool/blob/master/.github/workflows/cppcheck.yml
The run that failed: https://github.com/SChernykh/p2pool/actions/runs/16712977180