CI: github actions ensure compiler support

.github/workflows/tox_matrix.yml

@@ -78,7 +78,7 @@ jobs:
           conan install . --build missing --build=openjpeg -pr:b=default
           $(conan info $(pwd)/conanfile.py --paths --package-filter="tesseract/*" | grep package_folder: | sed -e 's/[ \t]*package_folder: //' -e "s/$/\/bin\/tesseract/") --version > $(pwd)/results.txt && \
               cat $(pwd)/results.txt && \
-              if grep -q libopenjp2 $(pwd)/results.txt; then echo "libopenjp2 check successful"; else >&2 echo "Tesseract was not built with openjpeg " ; exit 1; fi && \
+              if grep -q libopenjp2 $(pwd)/results.txt; then echo "libopenjp2 check successful"; else >&2 echo "Tesseract was not built with openjpeg " ; exit 1; fi
       - name: Run tox on Windows
         if: contains(matrix.os, 'windows')
         shell: cmd