Add default to switch statements to avoid compiler warnings.

Patch by: Pavel Janik
Review by: Andre Fischer

filter/source/msfilter/svdfppt.cxx

@@ -7940,6 +7940,9 @@ void    SdrPowerPointImport::ApplyTextAnchorAttributes( PPTTextObj& rTextObj, Sf
         case mso_anchorBottomCentered:
             eTHA = SDRTEXTHORZADJUST_LEFT;
             break;
+
+        default:
+            break;
         }
         // if there is a 100% use of following attributes, the textbox can been aligned also in vertical direction
         switch ( eTextAnchor )
@@ -7989,6 +7992,9 @@ void    SdrPowerPointImport::ApplyTextAnchorAttributes( PPTTextObj& rTextObj, Sf
         case mso_anchorBottomCentered:
             eTVA = SDRTEXTVERTADJUST_BOTTOM;
             break;
+
+        default:
+            break;
         }
         // if there is a 100% usage of following attributes, the textbox can be aligned also in horizontal direction
         switch ( eTextAnchor )