CMake: ignore git stderr when trying to sort out revision. NFC.

llvm-svn: 301650

llvm/cmake/modules/VersionFromVCS.cmake

@@ -45,7 +45,8 @@ function(add_version_info_from_vcs VERS)
             WORKING_DIRECTORY ${SOURCE_DIR}
             TIMEOUT 5
             RESULT_VARIABLE git_result
-            OUTPUT_VARIABLE git_output)
+            OUTPUT_VARIABLE git_output
+            ERROR_QUIET)
           if( git_result EQUAL 0 )
             string(REGEX MATCH "URL: ([^ \n]*)" svn_url ${git_output})
             if(svn_url)

llvm/include/llvm/Support/CMakeLists.txt

@@ -14,7 +14,8 @@ macro(find_first_existing_vc_file out_var path)
   execute_process(COMMAND ${git_executable} rev-parse --git-dir
     WORKING_DIRECTORY ${path}/cmake
     RESULT_VARIABLE git_result
-    OUTPUT_VARIABLE git_dir)
+    OUTPUT_VARIABLE git_dir
+    ERROR_QUIET)
   if(git_result EQUAL 0)
     string(STRIP "${git_dir}" git_dir)
     set(${out_var} "${git_dir}/logs/HEAD")