Fix clang-analyzer-valist.Uninitialized on Ubuntu

error: Function 'vsnprintf' is called with an uninitialized va_list argument

- Silence this warning as the variable will be initialized by the time `vsprintf()` will be called plus it seems that it is not standard in C/C++ to initialize this type before `va_start()`

src/filefuncs.c

@@ -207,6 +207,7 @@ void LogError(LOG_INFO *LogInfo, const int mode, const char *fmt, ...) {
 #endif
     }
 
+    // NOLINTNEXTLINE(clang-analyzer-valist.Uninitialized)
     expectedWriteSize = vsnprintf(buf, MAX_LOG_SIZE, outfmt, args);
 #ifdef SWDEBUG
     if (expectedWriteSize > MAX_LOG_SIZE) {