patch 8.0.0668: nsis installer script does not work

Problem:    Nsis installer script does not work. (Christian Brabandt)
Solution:   Fix the syntax of /SD.
diff --git a/nsis/gvim.nsi b/nsis/gvim.nsi
index 9ace4ea..dba9021 100644
--- a/nsis/gvim.nsi
+++ b/nsis/gvim.nsi
@@ -87,7 +87,8 @@
 Function .onInit
   MessageBox MB_YESNO|MB_ICONQUESTION \
 	"This will install Vim ${VER_MAJOR}.${VER_MINOR} on your computer.$\n Continue?" \
-	/SD IDYES NoAbort
+	/SD IDYES \
+	IDYES NoAbort
 	    Abort ; causes installer to quit.
 	NoAbort: