rom loader: use qemu_strdup.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/hw/loader.c b/hw/loader.c
index 7aa1a67..6baafa8 100644
--- a/hw/loader.c
+++ b/hw/loader.c
@@ -559,7 +559,7 @@
     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);