Fix negative error code termination for MSVS (See #86)

tests/Make-check-cl.bat

@@ -55,8 +55,9 @@ for %%f in (test-*.c) do (
     echo =================================================
     echo Testing %%f
     REM Copy the test file as a C++ file as CL.EXE only support C++ file
+    del test.exe
     copy %%f test.cpp
-    if ERRORLEVEL 1 EXIT /B 1
+    if not ERRORLEVEL 0 EXIT /B 1
     REM Compile the test suite
     REM /Zc:preprocessor is mandatory to have a compliant preprocessor
     REM /Zc:__cplusplus is needed to report the real value of __cplusplus, so that M*LIB uses the C++ atomic, and not its emulation.
@@ -64,7 +65,7 @@ for %%f in (test-*.c) do (
     REM Inform M*LIB to use Annex K by defining __STDC_WANT_LIB_EXT1__
     echo Compiling %%f with %compiler%
     %compiler% /I.. /O2 /W3 /std:c++14 /Zc:__cplusplus /Zc:preprocessor /D__STDC_WANT_LIB_EXT1__ test.cpp > %%f.log 2>&1 
-    if ERRORLEVEL 1 ( 
+    if not ERRORLEVEL 0 ( 
         echo *** BUILD ERROR for %%f *** >> %%f.log
         type %%f.log 
         if /i "%%f" NEQ "%expectedFailure1%" if /i "%%f" NEQ "%expectedFailure2%" EXIT /B 1
@@ -72,10 +73,10 @@ for %%f in (test-*.c) do (
     REM Execute it
     echo Running %%f
     test.exe >> %%f.log 2>&1 
-    if ERRORLEVEL 1 (
+    if not ERRORLEVEL 0 (
         echo *** RUNTIME ERROR for %%f ***  >> %%f.log
         type %%f.log 
-        if /i "%%f" NEQ "%expectedFailure%" EXIT /B 1
+        if /i "%%f" NEQ "%expectedFailure%"  if /i "%%f" NEQ "%expectedFailure2%" EXIT /B 1
     ) ELSE (
         echo Test OK for %%f  >> %%f.log
     )