Cleanup patch from Denis Vlasenko.  Mostly variants of removing the if(x)
from before "if(x) free(x)".
diff --git a/e2fsprogs/blkid/devno.c b/e2fsprogs/blkid/devno.c
index 7d083e7..2979280 100644
--- a/e2fsprogs/blkid/devno.c
+++ b/e2fsprogs/blkid/devno.c
@@ -218,8 +218,7 @@
 	}
 	printf("Looking for device 0x%04Lx\n", devno);
 	devname = blkid_devno_to_devname(devno);
-	if (devname)
-		free(devname);
+	free(devname);
 	return 0;
 }
 #endif