appveyor: If any one builds fail, mark the entire ci as failure

appveyor.yml

@@ -34,6 +34,8 @@ build_script:
         exit 1
       fi
 
+      SUCCESS=1
+
       for f in *; do
         [ ! -d "$f" ] || [ -L "$f" ] || [ "$f" = "base" ] && continue;
         echo "checking $f";
@@ -50,10 +52,16 @@ build_script:
           cp -Rf ../base ./base
 
           npm install --only=dev
-          if [ $? -ne 0 ]; then continue; fi;
+          if [ $? -ne 0 ]; then
+            SUCCESS=0;
+            continue;
+          fi;
 
           npm run build
-          if [ $? -ne 0 ]; then continue; fi;
+          if [ $? -ne 0 ]; then
+            SUCCESS=0;
+            continue;
+          fi;
 
           ./7zas a -xr!*.xcf -mx9 "${CURR_VER}_build-sc.7z" package.json index.mjs api base public
           echo "Creating release on gitea"
@@ -80,6 +88,10 @@ build_script:
         cd..
       done
 
+      if [ SUCCESS -eq 0 ]; then
+        exit 1;
+      fi;
+
 # on build failure
 on_failure:
   - sh: echo on_failure