Patch to fix mingw compilation problem contributed by Henrik.

llvm-svn: 19112

llvm/lib/System/Win32/Process.cpp

@@ -22,6 +22,11 @@
 //===          and must not be UNIX code
 //===----------------------------------------------------------------------===//
 
+#ifdef __MINGW
+// This ban should be lifted when MinGW 1.0+ has defined this value.
+#  define _HEAPOK (-2)
+#endif
+
 namespace llvm {
 using namespace sys;