pp_formline(): add empty body to empty while loop

my previous commit in this function added a block that happened
to follow directly after a bodiless while loop, i.e. 'while(...);'.
clang spotted this and warned. So add an empty body '{}' after the
while to visually disambiguate it.

1 files changed, 3 insertions, 1 deletions

diff --git a/pp_ctl.c b/pp_ctl.c
index c4c8bcd0c1..44498bc3fe 100644
--- a/pp_ctl.c
+++ b/pp_ctl.c
@@ -878,7 +878,9 @@ PP(pp_formline)
 
 	case FF_NEWLINE: /* delete trailing spaces, then append \n */
 	    f++;
-	    while (t-- > (SvPVX(PL_formtarget) + linemark) && *t == ' ') ;
+	    while (t-- > (SvPVX(PL_formtarget) + linemark) && *t == ' ')
+            {}
+
             {
                 STRLEN cur = t - SvPVX_const(PL_formtarget);
                 t = SvGROW(PL_formtarget, cur + 1 + 1) + cur;