(keycompare): call alloca(0) after each iteration

diff --git a/src/sort.c b/src/sort.c
index 70b970a..c2d0844 100644 (file)
--- a/src/sort.c
+++ b/src/sort.c
@@ -1684,8 +1684,12 @@ keycompare (const struct line *a, const struct line *b)
 
          diff = strcoll (copy_a, copy_b);
 
+         /* Free copy_a and copy_b.  */
+         alloca (0);
+
          if (diff)
            return key->reverse ? -diff : diff;
+
          continue;
        }
 #endif