Use cancellation only on Windows

teobugslayer · teobugslayer · commit 42224bc4cd71 · 2015-05-15T15:09:07.000+03:00
Due to different security models on Windows and *ix, this code cannot be made to work reliably on all OSes.
Because it exists only because Windows keeps executable code locked, the right thing to do is to execute it only on Windows.
diff --git a/lib/common b/lib/common
@@ -1 +1 @@
-Subproject commit ff2c775a44cf22a89e2e35603b95bedf89476777
+Subproject commit d1230fadf8f3dbabde8593662100cf3912e07e95
