expand complex cascading conditional operator

Change-Id: Iad995dcd6f1a65a623e7a1bfac8038ce568d40c0
Reviewed-on: https://gerrit.libreoffice.org/13005Reviewed-by: Björn Michaelsen <bjoern.michaelsen@canonical.com>
Tested-by: Björn Michaelsen <bjoern.michaelsen@canonical.com>

sw/source/core/unocore/unostyle.cxx

@@ -700,11 +700,17 @@ uno::Any SwXStyleFamily::getByIndex(sal_Int32 nTempIndex)
                     uno::Reference< style::XStyle >  xStyle = _FindStyle(sStyleName);
                     if(!xStyle.is())
                     {
-                        xStyle = eFamily == SFX_STYLE_FAMILY_PAGE ?
-                            new SwXPageStyle(*pBasePool, pDocShell, eFamily, sStyleName) :
-                                eFamily == SFX_STYLE_FAMILY_FRAME ?
-                                new SwXFrameStyle(*pBasePool, pDocShell->GetDoc(), pBase->GetName()):
-                                    new SwXStyle(*pBasePool, eFamily, pDocShell->GetDoc(), sStyleName);
+                        switch(eFamily)
+                        {
+                            case SFX_STYLE_FAMILY_PAGE:
+                                xStyle = new SwXPageStyle(*pBasePool, pDocShell, eFamily, sStyleName);
+                                break;
+                            case SFX_STYLE_FAMILY_FRAME:
+                                xStyle = new SwXFrameStyle(*pBasePool, pDocShell->GetDoc(), pBase->GetName());
+                                break;
+                            default:
+                                xStyle = new SwXStyle(*pBasePool, eFamily, pDocShell->GetDoc(), sStyleName);
+                        }
                     }
                     aRet.setValue(&xStyle, cppu::UnoType<style::XStyle>::get());
                 }