parser: fix mut args with the new syntax; checker: fmt

.github/workflows/ci.yml

@@ -29,8 +29,8 @@ jobs:
       run: sudo rm -f /etc/apt/sources.list.d/dotnetdev.list /etc/apt/sources.list.d/microsoft-prod.list; sudo apt-get update; sudo apt-get install --quiet -y libglfw3 libglfw3-dev libfreetype6-dev libssl-dev sqlite3 libsqlite3-dev libsdl2-dev libsdl2-ttf-dev libsdl2-mixer-dev libsdl2-image-dev valgrind
     - name: Build v
       run: |
-        echo $VFLAGS 
-        make -j4 
+        echo $VFLAGS
+        make -j4
         ./v -cg -o v cmd/v
     - name: Test v->c
       run: |
@@ -115,6 +115,7 @@ jobs:
         mkdir -p ~/.vmodules
         ln -s $(pwd) ~/.vmodules/ui
         ../v examples/rectangles.v
+        ../v examples/users.v
 
   ubuntu:
     runs-on: ubuntu-18.04