JRUBY-7190: Incorrect encoding on result string read from File introd…

…uced in JRuby 1.7.4

core/src/main/java/org/jruby/RubyFile.java

@@ -1232,7 +1232,7 @@ protected void sysopenInternal(String path, ModeFlags modes, int perm) {
                 IRubyObject theInternal = internalEncoding == null ? 
                         runtime.getNil() : runtime.getEncodingService().getEncoding(internalEncoding);
 
-                setEncoding(runtime.getCurrentContext(), theInternal, theBom, null);
+                setEncoding(runtime.getCurrentContext(), theBom, theInternal, null);
             }
         }
     }