PATCH: fix occasional warning

[Peter Stephenson <pws@xxxxxxx>]

The code here is actually safe, but some (now old) versions of gcc
produce a warning anyway.  Better to rely on more recent versions
optimising out the unused value.

Index: Src/subst.c
===================================================================
RCS file: /cvsroot/zsh/zsh/Src/subst.c,v
retrieving revision 1.125
diff -u -r1.125 subst.c
--- Src/subst.c	3 Jun 2011 22:03:44 -0000	1.125
+++ Src/subst.c	6 Jun 2011 09:01:59 -0000
@@ -2848,7 +2848,7 @@
 	    char *check_offset = check_colon_subscript(s, &check_offset2);
 	    if (check_offset) {
 		zlong offset = mathevali(check_offset);
-		zlong length;
+		zlong length = 0;
 		int length_set = 0;
 		int offset_hack_argzero = 0;
 		if (errflag)

pws


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