Fix possible crash when checking for 2-sided wall

Last instance where I forgot to change -1 to NO_INDEX after implementing commit 6883bd3.
bradharding · May 5, 2014 · a99729f · a99729f
1 parent 2019e9e
commit a99729f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/p_spec.c b/src/p_spec.c
@@ -257,7 +257,7 @@ int twoSided(int sector, int line)
     // jff 1/26/98 return what is actually needed, whether the line
     // has two sidedefs, rather than whether the 2S flag is set
 
-    return (sectors[sector].lines[line]->sidenum[1] != -1);
+    return (sectors[sector].lines[line]->sidenum[1] != NO_INDEX);
 }
 
 //