Remove trailing whitespace

Alex

Source/cmDocumentVariables.cxx

@@ -76,6 +76,7 @@ void cmDocumentVariables::DefineVariables(cmake* cm)
      "This is the line number of the file currently being"
      " processed by cmake.", false,
      "Variables that Provide Information");
+
   cm->DefineProperty
     ("CMAKE_BUILD_TOOL", cmProperty::VARIABLE,
      "Tool used for the actual build process.",