patch 8.1.1830: Travis does not report error when tests fail

Problem:    Travis does not report error when tests fail.
Solution:   Explicitly do "exit 1".

.travis.yml

@@ -145,6 +145,8 @@ script:
   - |
     if do_test make ${SHADOWOPT} ${TEST}; then
       echo -en "travis_fold:end:test\\r\\033[0K"
+    else
+      exit 1
     fi
 
 

src/version.c

@@ -769,6 +769,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1830,
 /**/
     1829,
 /**/