Add a memory sanitizer.

Author: Alexhuszagh

.github/workflows/fuzz.yml

@@ -18,8 +18,9 @@ jobs:
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: nightly
+          components: rust-src
       - run: cargo install cargo-fuzz
       - run: cargo check
-      - run: |
-            cd fuzz
-            cargo +nightly fuzz run --release ${{matrix.target}} -- -max_total_time=300
+      - run: cd fuzz
+      - run: cargo fuzz run --release ${{matrix.target}} -- -max_total_time=150
+      - run: cargo fuzz run --release ${{matrix.target}} --sanitizer memory -- -max_total_time=150