cmDocumentation: Fix exit after help output format warnings

After warning that a help output format is no longer supported, fix the
return value from cmDocumentation::CheckOptions to indicate that it was
still a help option that was parsed.  Otherwise CMake moves on to treat
the help output file name as a source tree and complains that it does
not exist.

1 files changed, 1 insertions, 1 deletions

diff --git a/Source/cmDocumentation.h b/Source/cmDocumentation.h
index 209cc278c0..05c0442860 100644
--- a/Source/cmDocumentation.h
+++ b/Source/cmDocumentation.h
@@ -137,7 +137,7 @@ private:
   std::vector<RequestedHelpItem> RequestedHelpItems;
   cmDocumentationFormatter Formatter;
 
-  static void WarnFormFromFilename(RequestedHelpItem& request);
+  static void WarnFormFromFilename(RequestedHelpItem& request, bool& result);
 };
 
 #endif