Do not stop if we do not have a dictsource for the language

.github/workflows/fuzzing.yml

@@ -55,7 +55,7 @@ jobs:
         name: crash-${{ matrix.arch }}-${{ matrix.lang }}.1
         path: crash-*
     - name: Fuzz function synth_espeak() with language-specific input
-      run:   cp dictsource/${{ matrix.lang }}_* tests/fuzzing/CORPUS_DIR/ ; FUZZ_VOICE=${{ matrix.lang }} tests/fuzzing/synth_fuzzer.test -seed=1  -runs=10000 -max_len=4096 tests/fuzzing/CORPUS_DIR
+      run:   cp dictsource/${{ matrix.lang }}_* tests/fuzzing/CORPUS_DIR/ || true ; FUZZ_VOICE=${{ matrix.lang }} tests/fuzzing/synth_fuzzer.test -seed=1  -runs=10000 -max_len=4096 tests/fuzzing/CORPUS_DIR
     - name: Store the crash POC
       if: ${{ failure() }}
       uses: actions/upload-artifact@v2