Fixed logic bug (thanks, Dan!).

docs/CREDITS.txt

@@ -109,6 +109,9 @@ PHYSFS_stat() API:
     Christoph Nelles
     Indy Sams
 
+Bug fixes:
+    Dan Olson
+
 Other stuff:
     Your name here! Patches go to icculus@icculus.org ...
 

extras/ignorecase.c

@@ -108,7 +108,7 @@ int PHYSFSEXT_locateCorrectCase(char *buf)
     } /* while */
 
     /* check final element... */
-    return locateOneElement(buf ? 0 : -1);
+    return locateOneElement(buf) ? 0 : -1;
 } /* PHYSFSEXT_locateCorrectCase */