Fix the test boilerplate in lib/if.t, so it can be run

from the t/ directory.

p4raw-id: //depot/perl@21828

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/if.t b/lib/if.t
index d17ff51806..d09de5895c 100644
--- a/lib/if.t
+++ b/lib/if.t
@@ -1,7 +1,7 @@
 #!./perl
 
 BEGIN {
-    chdir 't' and @INC = '../lib' if -f 't/TEST';
+    chdir 't' and @INC = '../lib' if $ENV{PERL_CORE};
 }
 
 my $t = 1;