cleanup to avoid sliver visible after conversion to pdf (merge from devbr6)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@56779 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/symbol/symbol/n_arrows/n_arrow8

@@ -51,3 +51,29 @@ POLYGON
     END
   END
 END
+
+# cleanup to avoid sliver visible after conversion to pdf
+POLYGON
+  COLOR NONE
+  RING
+    LINE
+      -1 -4.3875
+      -2.6143 -3.2
+      -4.2286 -1.5391
+      -2.6143 -2.7
+      -1 -4.3875
+    END
+  END
+END
+POLYGON
+  COLOR NONE
+  RING
+    LINE
+      1 -4.3875
+      2.6143 -3.2
+      4.2286 -1.5391
+      2.6143 -2.7
+      1 -4.3875
+    END
+  END
+END