Move variable declaration up.

Objects/unicodeobject.c

@@ -1536,18 +1536,18 @@ PyUnicode_DecodeUTF32Stateful(const char *s,
     const unsigned char *q, *e;
     int bo = 0;       /* assume native ordering by default */
     const char *errmsg = "";
+    /* Offsets from q for retrieving bytes in the right order. */
+#ifdef BYTEORDER_IS_LITTLE_ENDIAN
+    int iorder[] = {0, 1, 2, 3};
+#else
+    int iorder[] = {3, 2, 1, 0};
+#endif
     /* On narrow builds we split characters outside the BMP into two
        codepoints => count how much extra space we need. */
 #ifndef Py_UNICODE_WIDE
     for (i = pairs = 0; i < size/4; i++)
 	if (((Py_UCS4 *)s)[i] >= 0x10000)
 	    pairs++;
-#endif
-    /* Offsets from q for retrieving bytes in the right order. */
-#ifdef BYTEORDER_IS_LITTLE_ENDIAN
-    int iorder[] = {0, 1, 2, 3};
-#else
-    int iorder[] = {3, 2, 1, 0};
 #endif
     PyObject *errorHandler = NULL;
     PyObject *exc = NULL;