* Fixed bug: Git commands they do not output something on stdout are handles as error

git_helper.cmake

@@ -10,8 +10,7 @@ Function ( GitExecute COMMAND FORCE OUT_RESULT OUT_SUCCESS )
                       ERROR_VARIABLE
                         GIT_ERR )
     If (    NOT ${GIT_RET} EQUAL 0
-         OR NOT "${GIT_ERR}" STREQUAL ""
-         OR     "${GIT_REV}" STREQUAL "" )
+         OR NOT "${GIT_ERR}" STREQUAL "" )
         If ( FORCE )
             Message ( FATAL_ERROR "Unable to execute git command (command=${COMMAND} out=${GIT_REV}; err=${GIT_ERR}; ret=${GIT_RET})" )
         Else ( )