Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
builddir/build/BUILD/Remmina-v.1.4.33/plugins/python_wrapper/python_wrapper_common.c:78:18: warning: âREASONABLE_LIMIT_FOR_MALLOCâ defined but not used [-Wunused-const-variable=]
   78 | static const int REASONABLE_LIMIT_FOR_MALLOC = 1024 * 1024;
Unused C pre-processor constant.