Bug 11960: replace unnecessary call of GetMemberDetails by CanBookBeRenewed

C4::Circulation::CanBookBeRenewed called C4::Members::GetMemberDetails to
retrieve categorycode and branchcode.

- categorycode is used to retrieve the issuing rule
- the borrower information is passed to
  C4::Circulation::_GetCircControlBranch. Which only uses the branchcode
  parameter.

GetMemberDetails does a lot of calls/queries (patronflags,
account, etc.) that are not needed by CanBookBeRenewed.

This patch replaces it with a call to C4::Members::GetMember.

Note: I presented this small optimisation during a quick introduction to
NYTProf (hackfest 14 in Marseille).

Test plan:
- launch member unit tests
- check the code

Checking the code resulted in the following:
CanBookBeRenewed builds a hash reference from the borrowernumber
(2482). Note it is only used in this function and not passed in.

_GetCircControlBranch (2485) requires that hashreference to
have a branchcode key. As stated above.

The following line (2486) requires it have a categorycode key.

As such, C4::Members::GetMemberDetails is confirmed to be
overkill, and C4::Members::GetMember is sufficient.

Testing Done
------------
0) Back up DB
1) Make sure MPL is in the list of libraries.
2) Apply the patch.
3) run the koha qa test tool
4) prove -v t/db_dependent/Circulation.t

Patch applies cleanly. QA Test tool was all OK. All tests ran successfully.

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>

C4/Circulation.pm

@@ -2480,7 +2480,7 @@ sub CanBookBeRenewed {
     my $itemissue = GetItemIssue($itemnumber) or return ( 0, 'no_checkout' );
 
     $borrowernumber ||= $itemissue->{borrowernumber};
-    my $borrower = C4::Members::GetMemberDetails($borrowernumber)
+    my $borrower = C4::Members::GetMember( borrowernumber => $borrowernumber )
       or return;
 
     my $branchcode  = _GetCircControlBranch($item, $borrower);