Removed space before -- for consistency with code style.

src/Layout.c

@@ -624,7 +624,7 @@ static void layoutNodeImpl(css_node_t *node, float parentMaxWidth, css_direction
           // If there's only one element, then it's bigger than the content
           // and needs its own line
           i != startLine) {
-        nonFlexibleChildrenCount --;
+        nonFlexibleChildrenCount--;
         alreadyComputedNextLayout = 1;
         break;
       }