dpl: maintain debug variable inside debug guard

Signed-off-by: Augusto Berndt <augusto.berndt@precisioninno.com>

Author: gudeh

src/dpl/src/dbToOpendp.cpp

@@ -188,14 +188,14 @@ void Opendp::importDb()
   createArchitecture();
   setUpPlacementGroups();
 
-  std::map<int, int> height_counts;
-  for (const auto& node : network_->getNodes()) {
-    if (node->getType() != Node::CELL) {
-      continue;
-    }
-    height_counts[node->getHeight().v]++;
-  }
   if (logger_->debugCheck(utl::DPL, "hybrid", 1)) {
+    std::map<int, int> height_counts;
+    for (const auto& node : network_->getNodes()) {
+      if (node->getType() != Node::CELL) {
+        continue;
+      }
+      height_counts[node->getHeight().v]++;
+    }
     logger_->report("Cell height distribution ({} unique micron height(s)):",
                     height_counts.size());
     for (const auto& [height, count] : height_counts) {