fix appveyor

Author: mvorisek

appveyor/build_task.bat

@@ -2,21 +2,29 @@
 
 if /i "%APPVEYOR%%GITHUB_ACTIONS%" equ "True" (
     rem rmdir takes several minutes for large directories, rename instead
-    rem rmdir /s /q C:\cygwin >NUL 2>NUL
-    rename C:\cygwin C:\trash-cygwin
-    if %errorlevel% neq 0 exit /b 3
-    rem rmdir /s /q C:\cygwin64 >NUL 2>NUL
-    rename C:\cygwin64 C:\trash-cygwin64
-    if %errorlevel% neq 0 exit /b 3
-    rem rmdir /s /q C:\mingw >NUL 2>NUL
-    rename C:\mingw C:\trash-mingw
-    if %errorlevel% neq 0 exit /b 3
-    rem rmdir /s /q C:\mingw-w64 >NUL 2>NUL
-    rename C:\mingw-w64 C:\trash-mingw-w64
-    if %errorlevel% neq 0 exit /b 3
-    rem rmdir /s /q C:\msys64 >NUL 2>NUL
-    rename C:\msys64 C:\trash-msys64
-    if %errorlevel% neq 0 exit /b 3
+    if /i "%APPVEYOR%" equ "True" (
+        rmdir /s /q C:\cygwin >NUL 2>NUL
+        if %errorlevel% neq 0 exit /b 3
+        rmdir /s /q C:\cygwin64 >NUL 2>NUL
+        if %errorlevel% neq 0 exit /b 3
+        rmdir /s /q C:\mingw >NUL 2>NUL
+        if %errorlevel% neq 0 exit /b 3
+        rmdir /s /q C:\mingw-w64 >NUL 2>NUL
+        if %errorlevel% neq 0 exit /b 3
+        rmdir /s /q C:\msys64 >NUL 2>NUL
+        if %errorlevel% neq 0 exit /b 3
+    ) else (
+        rename C:\cygwin C:\trash-cygwin
+        if %errorlevel% neq 0 exit /b 3
+        rename C:\cygwin64 C:\trash-cygwin64
+        if %errorlevel% neq 0 exit /b 3
+        rename C:\mingw C:\trash-mingw
+        if %errorlevel% neq 0 exit /b 3
+        rename C:\mingw-w64 C:\trash-mingw-w64
+        if %errorlevel% neq 0 exit /b 3
+        rename C:\msys64 C:\trash-msys64
+        if %errorlevel% neq 0 exit /b 3
+    )
     rmdir /s /q c:\OpenSSL-Win32 >NUL 2>NUL
     if %errorlevel% neq 0 exit /b 3
     rmdir /s /q c:\OpenSSL-Win64 >NUL 2>NUL