Internal coverage: Fix coverage of tests that abort. No functional change intended.

src/V3Error.cpp

@@ -156,15 +156,20 @@ string V3Error::msgPrefix() {
 //======================================================================
 // Abort/exit
 
-void V3Error::vlAbort() {
+void V3Error::vlAbortOrExit() {
     if (V3Error::debugDefault()) {
         std::cerr << msgPrefix() << "Aborting since under --debug" << endl;
-        abort();
+        V3Error::vlAbort();
     } else {
         exit(1);
     }
 }
 
+void V3Error::vlAbort() {
+    VL_GCOV_FLUSH();
+    abort();
+}
+
 //======================================================================
 // Global Functions
 
@@ -272,7 +277,7 @@ void V3Error::v3errorEnd(std::ostringstream& sstr, const string& locationStr) {
 #endif
             }
 
-            vlAbort();
+            vlAbortOrExit();
         } else if (isError(s_errorCode, s_errorSuppressed)) {
             // We don't dump tree on any error because a Visitor may be in middle of
             // a tree cleanup and cause a false broken problem.