Refactor: Removing a if statement, because the nil value is already removed in the view template.

app/assets/javascripts/branch-graph.js

@@ -118,7 +118,6 @@
       for (var j = 0, jj = this.commits[i].parents.length; j < jj; j++) {
         c = this.preparedCommits[this.commits[i].parents[j][0]];
         ps = this.commits[i].parents[j][1];
-        if (c) {
         var cx = offsetX + 20 * c.time
           , cy = offsetY + 10 * c.space
           , psy = offsetY + 10 * ps;
@@ -171,7 +170,6 @@
           });
         }
       }
-      }
       
       if (this.commits[i].refs) {
         this.appendLabel(x, y, this.commits[i].refs);