SharedLibraryLoader: Fix leaked Closeable warning

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>

app/src/main/java/com/wireguard/android/util/SharedLibraryLoader.java

@@ -56,6 +56,7 @@ public final class SharedLibraryLoader {
                     }
                     out.getFD().sync();
                 }
+                zipFile.close();
                 return true;
             }
         }