Coverity Fix (#1912)

.github/workflows/coverity-scan.yml

@@ -13,6 +13,7 @@ jobs:
       - uses: actions/setup-python@v1
         with:
           python-version: 3.7.5
+
       - name: Download Coverity Build Tool
         run: |
           wget -q https://scan.coverity.com/download/cxx/linux64 --post-data "token=$TOKEN&project=radareorg%2Fcutter" -O cov-analysis-linux64.tar.gz
@@ -26,6 +27,9 @@ jobs:
           chmod go-w $HOME
           sudo chmod -R go-w /usr/share
       
+      - name: apt dependencies
+        run: sudo apt-get install ninja-build libgraphviz-dev
+      
       - name: py dependencies
         run: |
           pip install meson