Revert "gitweb: There can be empty patches (in git_patchset_body)"

This reverts commit 1ebb948,
as that patch quieted warning but was not proper solution.
The previous commit was.

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

gitweb/gitweb.perl

@@ -2533,7 +2533,7 @@ sub git_patchset_body {
 		print "<div class=\"diff from_file\">$patch_line</div>\n";
 
 		$patch_line = <$fd>;
-		last PATCH unless $patch_line;
+		#last PATCH unless $patch_line;
 		chomp $patch_line;
 
 		#assert($patch_line =~ m/^+++/) if DEBUG;