#3662: Fix segfault introduced when fixing memory leaks.

TESTED=./python -E -tt ./Lib/test/regrtest.py test_fileio
R (approach from bug)=Amaury and Benjamin
diff --git a/Modules/_fileio.c b/Modules/_fileio.c
index 6b3a98d..d6f004f 100644
--- a/Modules/_fileio.c
+++ b/Modules/_fileio.c
@@ -175,7 +175,7 @@
 						 kwlist,
 						 Py_FileSystemDefaultEncoding,
 						 &name, &mode, &closefd))
-			goto error;
+			return -1;
 	    }
 	}