fix odbc detection to not try to use odbc when no headers are installed

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@12788 d0543943-73ff-0310-b7d9-9358b9ac24b2

build/config/odbc.m4

@@ -135,7 +135,7 @@ AC_ARG_WITH(odbc-include,
 	fi
 
 	AC_MSG_CHECKING(whether to include odbc)
-	if test "X$ac_cv_odbc_where_lib" = "X" -a "X$ac_cv_odbc_where_inc" = "X"; then
+	if test "X$ac_cv_odbc_where_lib" = "X" -o "X$ac_cv_odbc_where_inc" = "X"; then
 	  ac_cv_found_odbc=no
 	  AC_MSG_RESULT(no)
 	else