rom loader: use qemu_strdup.

Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/loader.c

@@ -559,7 +559,7 @@ int rom_add_file(const char *file,
     rom->name = qemu_strdup(file);
     rom->path = qemu_find_file(QEMU_FILE_TYPE_BIOS, rom->name);
     if (rom->path == NULL) {
-        rom->path = strdup(file);
+        rom->path = qemu_strdup(file);
     }
 
     fd = open(rom->path, O_RDONLY | O_BINARY);