Update findfont.c

Included strlcpy.h to file so it will build.

Author: SFE-Brudnerd

source/findfont.c

@@ -4,6 +4,10 @@
 #include <stdlib.h>
 #include <string.h>
 #include <fontconfig/fontconfig.h>
+#if defined __MINGW32__ || defined __MINGW64__
+# include <sys/stat.h>
+# include "strlcpy.h"
+#endif
 #if defined __linux__
   #include <bsd/string.h>
 #endif