Fix formatting

Author: f18m

.github/workflows/main.yml

@@ -22,6 +22,8 @@ jobs:
 
     - name: show g++ version
       run: g++ --version
+    - name: show clang-format version
+      run: clang-format --version
 
     - name: install pypi-packaged dependencies
       run: sudo pip3 install graphviz build

src/malloc_tree_node.cpp

@@ -139,7 +139,7 @@ void MallocTreeNode::collect_stats_recursively_JSON(std::string& out)
 
 void MallocTreeNode::collect_stats_recursively_HUMANFRIENDLY(std::string& out)
 {
-    std::string b((m_nTreeLevel)*2, ' ');
+    std::string b((m_nTreeLevel) * 2, ' ');
     std::string i((m_nTreeLevel + 1) * 2, ' ');
 
     float w = get_total_weight_percentage();