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Fix segfault in Loopy printing, introduced when I added the dynamic
arrays 'textx' and 'texty' to the game_drawstate but failed to
initialise them in the temporary drawstate used by game_print().
Thanks to Arun Giridhar for spotting this.

[originally from svn r9173]

--- a/loopy.c

+++ b/loopy.c

@@ -3805,6 +3805,10 @@

     grid *g = state->game_grid;

     ds->tilesize = tilesize;

+    ds->textx = snewn(g->num_faces, int);

+    ds->texty = snewn(g->num_faces, int);

+    for (i = 0; i < g->num_faces; i++)

+        ds->textx[i] = ds->texty[i] = -1;

     for (i = 0; i < g->num_dots; i++) {

         int x, y;

@@ -3874,6 +3878,9 @@

             }

         }

     }

+

+    sfree(ds->textx);

+    sfree(ds->texty);

 }

 #ifdef COMBINED