Fix whitespace errors in .travis.yml.

(cherry picked from commit 873dcaf08292329939e71f64b78e815552247877)
Signed-off-by: Bruce A. Mah <bmah@es.net>
diff --git a/.travis.yml b/.travis.yml
index d64087b..91043c7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 language: c
- compiler:
+compiler:
    - gcc
    - clang
- os: linux
+os: linux
  
- script: ./configure && make && make check
+script: ./configure && make && make check