fix git missing error on cmder mini cmd shell

vendor/lib/lib_console.cmd

@@ -76,5 +76,4 @@ exit /b
 :::-------------------------------------------------------------------------------
 
     echo ERROR: %~1
-    echo CMDER Shell Initialization has Failed!
     exit /b

vendor/lib/lib_git.cmd

@@ -45,11 +45,7 @@ exit /b
     %lib_console% debug-output :read_version "Env Var - git_executable=%git_executable%"
 
     :: check if the executable actually exists
-    if not exist "%git_executable%" (
-        %lib_console% show_error "%git_executable%" does not exist!
-        exit /b -255
-    )
-
+    if exist "%git_executable%" (
         :: get the git version in the provided directory
         for /F "tokens=1,2,3 usebackq" %%A in (`"%git_executable%" --version 2^>nul`) do (
             if /i "%%A %%B" == "git version" (
@@ -61,6 +57,7 @@ exit /b
                 exit /b
             )
         )
+    )
 
     endlocal & set GIT_VERSION%~1=!GIT_VERSION%~1!
     exit /b