Bug 497363. qcms: Fix a memory leak when fread() fails. r=joedrew

Fixes a possible leak in qcms_profile_from_file() when fread()
can't read the entire profile.

gfx/qcms/iccread.c

@@ -765,8 +765,10 @@ qcms_profile* qcms_profile_from_file(FILE *file)
 
 	/* read the rest profile */
 	read_length = fread((unsigned char*)data + sizeof(length_be), 1, remaining_length, file);
-	if (read_length != remaining_length)
+	if (read_length != remaining_length) {
+		free(data);
 		return INVALID_PROFILE;
+	}
 
 	profile = qcms_profile_from_memory(data, length);
 	free(data);