Avoid "Use of uninitialized value $res in numeric eq (==)" warning

The test within the SKIP block expects $res to be undef, but the 'skip'
condition itself expects it to be defined and numeric.  So we were
getting an uninitialized value warning.  In 'skip' condition, test for
definedness before numeric comparison.

diff --git a/ext/GDBM_File/t/fatal.t b/ext/GDBM_File/t/fatal.t
index 01068f3..1cbfdc6 100644 (file)
--- a/ext/GDBM_File/t/fatal.t
+++ b/ext/GDBM_File/t/fatal.t
@@ -52,7 +52,7 @@ my $res = eval {
 };
 
 SKIP: {
-    skip "Can't trigger failure", 2 if $res == 99;
+    skip "Can't trigger failure", 2 if (defined $res and $res == 99);
 
     is $res, undef, "eval should return undef";