Print errors on failed smoke test runs

Author: holtrop-wolfssl

.github/workflows/smoke-test.yml

@@ -134,3 +134,10 @@ jobs:
         run: |
           FLAGS="${ENTRY_CFLAGS:-$MAKE_CFLAGS}"
           make check CFLAGS="$FLAGS" LDFLAGS="$ENTRY_LDFLAGS"
+
+      - name: Print errors
+        if: ${{ failure() }}
+        run: |
+          if [ -f test-suite.log ] ; then
+            cat test-suite.log
+          fi