Merge pull request #28902 from davidungar/windows-compatible-dummy-file

[Driver, Incremental] Make dummy make-file dependencies path OK for Windows

Author: shahmishal

lib/Driver/Compilation.cpp

@@ -2049,6 +2049,7 @@ void Compilation::addDependencyPathOrCreateDummy(
     HaveAlreadyAddedDependencyPath = true;
   } else if (!depPath.empty()) {
     // Create dummy empty file
-    std::ofstream(depPath.str().c_str());
+    std::error_code EC;
+    llvm::raw_fd_ostream(depPath, EC, llvm::sys::fs::F_None);
   }
 }