windows: use the proper format specifier for DWORD

Change-Id: If655342a6a7de4ee5fe176eda0b54cf0def6d491

Common/Core/vtkWin32ProcessOutputWindow.cxx

@@ -26,6 +26,14 @@
 # define _MAX_PATH 4096
 #endif
 
+#ifndef PRIdword
+#if _LP64
+#define PRIdword "u"
+#else
+#define PRIdword "lu"
+#endif
+#endif
+
 vtkStandardNewMacro(vtkWin32ProcessOutputWindow);
 
 extern "C" int vtkEncodedArrayWin32OutputWindowProcessWrite(const char* fname);
@@ -87,7 +95,7 @@ int vtkWin32ProcessOutputWindow::Initialize()
 
   // Construct the executable name from the process id, pointer to
   // this output window instance, and a count.  This should be unique.
-  sprintf(exeName, "vtkWin32OWP_%u_%p_%u.exe",
+  sprintf(exeName, "vtkWin32OWP_%"PRIdword"_%p_%u.exe",
           GetCurrentProcessId(), this, this->Count++);
 
   // Allocate a buffer to hold the executable path.