Fix issue with pop on storage array.

test/libsolidity/semanticTests/array/pop/parenthesized.sol

@@ -0,0 +1,12 @@
+contract C {
+  int[] data;
+  function f() public returns (uint) {
+    data.push(1);
+    (data.pop)();
+    return data.length;
+  }
+}
+// ====
+// compileViaYul: also
+// ----
+// f() -> 0