fix using c-api / compile with gcc

Author: zdenop

src/ccutil/platform.h

@@ -38,7 +38,11 @@
 #endif
 #endif /* defined(_MSC_VER) */
 #else
+#ifdef __cplusplus
 #include <climits>
+#else /* C compiler*/
+#include <limits.h>
+#endif /* __cplusplus */
 #ifndef PATH_MAX
 #define MAX_PATH 4096
 #else