Resolves: tdf#133812 Add the 'Result' style again used by the Subtotal tool

Necessary to also adapt the test case that checks for a defined
number of styles.

Regression from

    commit 7b0aed617f1e57335837cf56ef2d222a96f8270d
    CommitDate: Wed Sep 28 11:42:56 2016 +0000

        Remove old cell styles from calc

and

    commit 06f319937187f76ee402d53b3baa78c391c2af19
    CommitDate: Sun Oct 2 13:51:26 2016 +0000

        tdf#90937 Add a set of cell styles to calc

Change-Id: I3e47d8e24d375a64d9056e7a85197b89173c8e41
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/103520
Tested-by: Jenkins
Reviewed-by: Eike Rathke <erack@redhat.com>
(cherry picked from commit 930d82550863430c9bef96ac307c3ff2cfefe4d8)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/103432
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
diff --git a/sc/qa/extras/scstylefamilyobj.cxx b/sc/qa/extras/scstylefamilyobj.cxx
index a5843a8..8597d22 100644
--- a/sc/qa/extras/scstylefamilyobj.cxx
+++ b/sc/qa/extras/scstylefamilyobj.cxx
@@ -83,10 +83,14 @@ private:
    uno::Reference<lang::XComponent> m_xComponent;
};

/* TODO: this c/should be derived/defined from the real style count, default
 * implemented plus sc/res/xml/styles.xml */
constexpr sal_Int32 kScStyleFamilyObjCount = 20;

ScStyleFamilyObj::ScStyleFamilyObj()
    : CalcUnoApiTest("/sc/qa/extras/testdocuments")
    , XElementAccess(cppu::UnoType<style::XStyle>::get())
    , XIndexAccess(19)
    , XIndexAccess(kScStyleFamilyObjCount)
    , XNameAccess("ScStyleFamilyObj")
    , XNameContainer("ScStyleFamilyObj")
    , XNameReplace("ScStyleFamilyObj")
diff --git a/sc/res/xml/styles.xml b/sc/res/xml/styles.xml
index 9bfda94..d1d1a75 100644
--- a/sc/res/xml/styles.xml
+++ b/sc/res/xml/styles.xml
@@ -57,4 +57,8 @@
    <style:style style:name="Accent 3" style:family="table-cell" style:parent-style-name="Accent">
        <style:table-cell-properties fo:background-color="#dddddd"/>
    </style:style>

    <style:style style:name="Result" style:family="table-cell" style:parent-style-name="Default">
        <style:text-properties fo:font-weight="bold" fo:font-style="italic" style:text-underline-style="solid"/>
    </style:style>
</office:styles>