[gnumeric] xlsx: fix axes import for XLContourPlot too

[Morten Welinder <mortenw src gnome org>]

commit 0df7a158043fcba3e407c5ab90553da5fd29c031
Author: Morten Welinder <terra gnome org>
Date:   Sun Oct 22 19:25:38 2017 -0400

    xlsx: fix axes import for XLContourPlot too

 plugins/excel/xlsx-read-drawing.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/plugins/excel/xlsx-read-drawing.c b/plugins/excel/xlsx-read-drawing.c
index 248e39f..5b722ef 100644
--- a/plugins/excel/xlsx-read-drawing.c
+++ b/plugins/excel/xlsx-read-drawing.c
@@ -981,6 +981,7 @@ xlsx_create_axis_object (XLSXReadState *state)
                break;
 
        case XLSX_PT_GOGCONTOURPLOT:
+       case XLSX_PT_XLCONTOURPLOT:
                if (state->axis.type == XLSX_AXIS_SER)
                        role = "Pseudo-3D-Axis";
                break;