Update control_flow_graph.cpp

added comment back in. Removed white space

src/shader_recompiler/frontend/control_flow_graph.cpp

@@ -110,6 +110,8 @@ void CFG::EmitBlocks() {
         const size_t end_index = get_index(end) - 1;
         const auto& end_inst = inst_list[end_index];
         
+        // Insert block between the labels using the last instruction
+        // as an indicator for branching type.
         Block* block = block_pool.Create();
         block->begin = start;
         block->end = end;