bitops: Use non-bitops ctzl

The use of ctz has already eliminated zero, and thus the difference
in edge conditions between the two routines is irrelevant.

Signed-off-by: Richard Henderson <[email protected]>
Reviewed-by: Eric Blake <[email protected]>
Signed-off-by: Blue Swirl <[email protected]>

util/bitops.c

@@ -60,7 +60,7 @@ unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
         return result + size;	/* Nope. */
     }
 found_middle:
-    return result + bitops_ctzl(tmp);
+    return result + ctzl(tmp);
 }
 
 /*