avoid C labels in column 0

Generally the guideline is to outdent C labels (e.g. 'foo:') 2 columns
from the surrounding code.

If the label starts at column zero, then it means that diffs, such as
those generated by git, display the label rather than the function
name at the head of a diff block: which makes diffs harder to peruse.

1 files changed, 1 insertions, 1 deletions

diff --git a/pp.c b/pp.c
index c4c4819d34..a1a161d45e 100644
--- a/pp.c
+++ b/pp.c
@@ -3211,7 +3211,7 @@ PP(pp_substr)
     }
     RETURN;
 
-bound_fail:
+  bound_fail:
     if (repl)
 	Perl_croak(aTHX_ "substr outside of string");
     Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), "substr outside of string");