Fix format string

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30935 a1c6a512-1295-4272-9138-f99709370657
diff --git a/flash/extract/extract.c b/flash/extract/extract.c
index b1f8f4d..2389f92 100644
--- a/flash/extract/extract.c
+++ b/flash/extract/extract.c
@@ -109,7 +109,7 @@
 	// sanity check
 	if (uiSize > sizeof(aImage) - uiStart || uiSize < 40000)
 	{	
-		printf("Error: Impossible image size &d bytes.\n", uiSize);
+		printf("Error: Impossible image size %d bytes.\n", uiSize);
 		exit(3);
 	}