Core/Misc: fix build

(cherry picked from commit ce5def332fa12ea4b2f3223fbaa4e41750da9cfb)

src/common/Debugging/Errors.cpp

@@ -96,7 +96,7 @@ void Abort(char const* file, int line, char const* function)
     exit(1);
 }
 
-void AbortHandler(int sigval)
+void AbortHandler(int /*sigval*/)
 {
     // nothing useful to log here, no way to pass args
     *((volatile int*)NULL) = 0;