fix all bare malloc() realloc() etc calls to have a proper cast in front

src/plugin_common/charset.c

@@ -83,7 +83,7 @@ char* FLAC_plugin__charset_convert_string (const char *string, char *from, char
 	/* Due to a GLIBC bug, round outbuf_size up to a multiple of 4 */
 	/* + 1 for nul in case len == 1 */
 	outsize = ((length + 3) & ~3) + 1;
-	out = malloc(outsize);
+	out = (char*)malloc(outsize);
 	outleft = outsize - 1;
 	outptr = out;