patch 8.1.1506: syntax error in Travis config

Problem:    Syntax error in Travis config.
Solution:   Set AUDIODEV in another section.

.travis.yml

@@ -10,9 +10,6 @@ compiler:
   - gcc
 
 env:
-  global:
-      # pretend to play sounds
-      AUDIODEV=null
   - &tiny-nogui
     BUILD=yes TEST=test COVERAGE=no FEATURES=tiny "CONFOPT='--disable-gui'" SHADOWOPT= SRCDIR=./src CHECK_AUTOCONF=no
   - &tiny
@@ -141,6 +138,8 @@ before_script:
     if [[ "${TRAVIS_OS_NAME}" = "linux" ]]; then
       export DISPLAY=:99.0
       sh -e /etc/init.d/xvfb start && sleep 3
+      # pretend to play sound
+      export AUDIODEV=null
     fi
 
 script:

src/version.c

@@ -777,6 +777,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1506,
 /**/
     1505,
 /**/