Include header for EXIT_SUCCESS and EXIT_FAILURE

Add #include <cstdlib>

Applications/ctkDICOM/Testing/Cpp/ctkDICOMTest1.cpp

@@ -23,6 +23,7 @@
 #include <QProcess>
 
 // STD includes
+#include <cstdlib>
 #include <iostream>
 
 int ctkDICOMTest1(int argc, char * argv [])

Applications/ctkDICOMDemoSCU/Testing/Cpp/ctkDICOMDemoSCUTest1.cpp

@@ -23,6 +23,7 @@
 #include <QProcess>
 
 // STD includes
+#include <cstdlib>
 #include <iostream>
 
 int ctkDICOMDemoSCUTest1(int argc, char * argv [])

Applications/ctkDICOMIndexer/Testing/Cpp/ctkDICOMIndexerTest1.cpp

@@ -23,6 +23,7 @@
 #include <QProcess>
 
 // STD includes
+#include <cstdlib>
 #include <iostream>
 
 int ctkDICOMIndexerTest1(int argc, char * argv [])