cmCTestRunTest: Modernize constructor and destructor decls

Source/CTest/cmCTestRunTest.cxx

@@ -38,10 +38,6 @@ cmCTestRunTest::cmCTestRunTest(cmCTestTestHandler* handler)
   this->RunAgain = false;     // default to not having to run again
 }
 
-cmCTestRunTest::~cmCTestRunTest()
-{
-}
-
 bool cmCTestRunTest::CheckOutput()
 {
   // Read lines for up to 0.1 seconds of total time.

Source/CTest/cmCTestRunTest.h

@@ -24,8 +24,9 @@ class cmProcess;
 class cmCTestRunTest
 {
 public:
-  cmCTestRunTest(cmCTestTestHandler* handler);
-  ~cmCTestRunTest();
+  explicit cmCTestRunTest(cmCTestTestHandler* handler);
+
+  ~cmCTestRunTest() = default;
 
   void SetNumberOfRuns(int n) { this->NumberOfRunsLeft = n; }
   void SetRunUntilFailOn() { this->RunUntilFail = true; }