IDE: IWYU (#3540)

compnerd · atrick · commit ea432ea47eb9 · 2016-07-15T22:30:13.000-05:00
Add missing string inclusion.  Fixes a compile issue against non-Ubuntu linux
compilation.
diff --git a/include/swift/IDE/ModuleInterfacePrinting.h b/include/swift/IDE/ModuleInterfacePrinting.h
@@ -16,6 +16,7 @@
 #include "swift/Basic/LLVM.h"
 #include "swift/Basic/OptionSet.h"
 
+#include <string>
 #include <vector>
 
 namespace swift {
