Bug 163114 - Templatise all calls to DisplayError. Patch D (the last one). Patch by gerv; r=burnus.

git-svn-id: svn://10.0.0.236/trunk@131264 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/webtools/bugzilla/showdependencygraph.cgi

@@ -70,8 +70,7 @@ sub AddLink {
 $::FORM{'rankdir'} = "LR" if !defined $::FORM{'rankdir'};
 
 if (!defined($::FORM{'id'}) && !defined($::FORM{'doall'})) {
-    DisplayError("No bug numbers given.");
-    exit;
+    ThrowCodeError("missing_bug_id");
 }    
 
 my $filename = "data/webdot/$$.dot";