More review comments

Author: gerhardol

frontend.bat

@@ -459,7 +459,6 @@ set vswfilter=!vswPriority!
 
 :_vswAttempt
 call :dbgprint "attempts with filter: " vswfilter vswPreRel
-call :dbgprint " using: " vswbin
 
 set "vspath=" & set "vsver="
 for /F "usebackq tokens=1* delims=: " %%a in (`"!vswbin!" -nologo !vswPreRel! -requires !vswfilter! Microsoft.Component.MSBuild`) do (
@@ -527,7 +526,7 @@ for /F "tokens=1,2 delims=." %%a in ("!vsver!") do (
 REM VS2019 changes the path
 if !vsver! geq 16 set vsver=Current
 
-if not exist "!vspath!\MSBuild\!vsver!\Bin" set "%3=" & exit /B 0
+if not exist "!vspath!\MSBuild\!vsver!\Bin" set "%3=" & exit /B %ERROR_PATH_NOT_FOUND%
 
 set _msbp=!vspath!\MSBuild\!vsver!\Bin
 call :dbgprint "found path via vswhere: " _msbp