fix if(p)/free(p) construct

No need of explicit NULL check before free.

Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Signed-off-by: Akhilesh Kumar <akhilesh.k@samsung.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

e2fsprogs/old_e2fsprogs/blkid/dev.c

@@ -44,7 +44,6 @@ void blkid_free_dev(blkid_dev dev)
 					   bit_tags);
 		blkid_free_tag(tag);
 	}
-	if (dev->bid_name)
 	free(dev->bid_name);
 	free(dev);
 }

e2fsprogs/old_e2fsprogs/fsck.c

@@ -354,11 +354,8 @@ static void parse_escape(char *word)
 
 static void free_instance(struct fsck_instance *i)
 {
-	if (i->prog)
 	free(i->prog);
-	if (i->device)
 	free(i->device);
-	if (i->base_device)
 	free(i->base_device);
 	free(i);
 }
@@ -432,7 +429,6 @@ static int parse_fstab_line(char *line, struct fs_info **ret_fs)
 	fs = create_fs_device(device, mntpnt, type ? type : "auto", opts,
 			      freq ? atoi(freq) : -1,
 			      passno ? atoi(passno) : -1);
-	if (dev)
 	free(dev);
 
 	if (!fs)

scripts/kconfig/confdata.c

@@ -124,7 +124,6 @@ int conf_read_simple(const char *name)
 		case S_INT:
 		case S_HEX:
 		case S_STRING:
-			if (sym->user.val)
 			free(sym->user.val);
 		default:
 			sym->user.val = NULL;

scripts/kconfig/util.c

@@ -79,7 +79,6 @@ struct gstr str_assign(const char *s)
 /* Free storage for growable string */
 void str_free(struct gstr *gs)
 {
-	if (gs->s)
 	free(gs->s);
 	gs->s = NULL;
 	gs->len = 0;