Fix CPP usage

The code `#if WINDOWS` works but is not really correct. GHC HEAD now has a `-Wcpp-undef` warning that we would like to turn on and hence need this fixed.
jamescheney · Oct 23, 2016 · f995e84 · f995e84
1 parent 18bb13c
commit f995e84
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/System/Process/Internals.hs b/System/Process/Internals.hs
@@ -50,7 +50,7 @@ import System.Posix.Internals (FD)
 
 import System.Process.Common
 
-#if WINDOWS
+#ifdef WINDOWS
 import System.Process.Windows
 #else
 import System.Process.Posix