Convert in lvalue context

Author: lucic71

cpp2rust/converter/converter.cpp

@@ -2448,7 +2448,10 @@ bool Converter::VisitImplicitCastExpr(clang::ImplicitCastExpr *expr) {
     }
     bool dest_pointee_const =
         expr->getType()->getPointeeType().isConstQualified();
-    Convert(sub_expr);
+    {
+      PushExprKind push(*this, ExprKind::LValue);
+      Convert(sub_expr);
+    }
     if (IsStringLiteralExpr(sub_expr)) {
       StrCat(".as_ptr()");
       if (!dest_pointee_const) {