src,http: fix uncaughtException miss in http
Pull Request check-list
-
Does make -j8 test
(UNIX) orvcbuild test nosign
(Windows) pass with this change (including linting)? -
Is the commit message formatted according to [CONTRIBUTING.md][0]? -
If this change fixes a bug (or a performance problem), is a regression test (or a benchmark) included? -
Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
Description
If the call to MakeCallback is currently in_makecallback() then return
the empty handle instead of Undefined. This allows the error to
propagate through multiple MakeCallback calls.
R=@misterdjules R=@indutny R=@TheAlphaNerd