Fix copy-paste error

Due the variables above this error, I think this needs to be the .Height, not .Width

Change-Id: If796cd1950f59d0e1a6005c1c1185066c688ef55
Reviewed-on: https://gerrit.libreoffice.org/15748Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>

oox/source/drawingml/customshapepresetdata.cxx

@@ -146,7 +146,7 @@ awt::Rectangle lcl_parseRectangle(const OString& rValue)
     aToken = aToken.copy(nIndex);
     assert(aToken.startsWith(aExpectedHeightPrefix));
     nIndex = strlen(aExpectedHeightPrefix);
-    aRectangle.Width = static_cast<sal_Int32>(aToken.copy(nIndex).toInt32());
+    aRectangle.Height = static_cast<sal_Int32>(aToken.copy(nIndex).toInt32());
 
     return aRectangle;
 }