File: fix-unused-value.patch

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--- a/lib/regexec.c	2020-10-21 14:25:35.310195912 +0000
+++ b/lib/regexec.c	2020-10-21 14:32:07.961765604 +0000
@@ -828,7 +828,11 @@
 		    break;
 		  if (__glibc_unlikely (err != REG_NOMATCH))
 		    goto free_return;
+#ifdef DEBUG
+		  /* Only used for assertion below when DEBUG is set, otherwise
+		     it will be over-written when we loop around.  */
 		  match_last = -1;
+#endif
 		}
 	      else
 		break; /* We found a match.  */