Avoid spurious reinitialization in TestState

ChangeLog

@@ -1,5 +1,8 @@
 2022-11-30  Jacob Bachmeyer  <jcb@gnu.org>
 
+	* dejagnu.h (TestState::TestState): Only perform initialization
+	when the first TestState object is constructed.
+
 	* dejagnu.h (DG__endmsg): New function, called using atexit().
 	(endmsg_registered, TestState_count): Add fields to DG__status.
 	(DG__init): New function, to register DG__endmsg.

dejagnu.h

@@ -218,6 +218,12 @@ class TestState {
  public:
   TestState (void)
     {
+      DG__status.TestState_count++;
+
+      if (DG__status.TestState_count > 1)
+	return; /* Do not clear the counters if additional TestState
+		   objects are constructed. */
+
       DG__status.pass = 0;
       DG__status.fail = 0;
       DG__status.xpass = 0;
@@ -228,7 +234,6 @@ class TestState {
 
       /* C++ object destruction will substitute for atexit(). */
       DG__status.endmsg_registered = 1;
-      DG__status.TestState_count++;
     }
 
   ~TestState (void)