fix incorrect type in message loading

zlib has changed 
typedef voidp gzFile;
to 
typedef struct gzFile_s *gzFile;

historically the gzFile *fp has efectively expanded to void**fp
The compiler considerd void ** to be identical to void* as void cannot 
be dereferenced and compilation suceeded. 
With a concrete type it does not work.


svn path=/trunk/netsurf/; revision=13517

utils/messages.c

@@ -54,7 +54,7 @@ static struct hash_table *messages_hash = NULL;
 struct hash_table *messages_load_ctx(const char *path, struct hash_table *ctx)
 {
 	char s[400];
-	gzFile *fp;
+	gzFile fp;
 
 	assert(path != NULL);