Fix gcc -Wall warnings, especially on 64-bit systems

Signed-off-by: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/resize/sim_progress.c b/resize/sim_progress.c
index 103a727..400e364 100644
--- a/resize/sim_progress.c
+++ b/resize/sim_progress.c
@@ -87,7 +87,7 @@
 		return retval;
 	memset(prog, 0, sizeof(struct ext2_sim_progress));
 
-	retval = ext2fs_get_mem(strlen(label)+1, (void **) &prog->label);
+	retval = ext2fs_get_mem(strlen(label)+1, &prog->label);
 	if (retval) {
 		free(prog);
 		return retval;