More ticket #507: updated GNU build system with the G.722 codec and fixed minor warning about operator precedence

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@1871 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjmedia/include/pjmedia-codec/config_auto.h.in b/pjmedia/include/pjmedia-codec/config_auto.h.in
index 528390c..efbfdd1 100644
--- a/pjmedia/include/pjmedia-codec/config_auto.h.in
+++ b/pjmedia/include/pjmedia-codec/config_auto.h.in
@@ -54,6 +54,12 @@
 #endif
 
 
+/* G722 codec */
+#ifndef PJMEDIA_HAS_G722_CODEC
+#undef PJMEDIA_HAS_G722_CODEC
+#endif
+
+
 #endif	/* __PJMEDIA_CODEC_CONFIG_AUTO_H_ */