[gtksourceview] build: fix params alignment

[Sébastien Wilmet <swilmet src gnome org>]

commit 3aeb1a9bc81cec4e11ae20124d4ae48917983b39
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat May 7 11:22:28 2016 +0200

    build: fix params alignment
    
    configure.ac should be seen as real code too. Misalignment is
    misleading.
    
    Also, it's more portable to test "x$var" = "xvalue".

 configure.ac |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 6ff4bea..fa63690 100644
--- a/configure.ac
+++ b/configure.ac
@@ -196,10 +196,11 @@ AC_SUBST(GDK_PIXBUF_PREFIX)
 
 # Installed Tests for gnome continuous integration
 AC_ARG_ENABLE(installed_tests,
-       AS_HELP_STRING([--enable-installed-tests],
-               [Install test programs (default: no)]),,
-               [enable_installed_tests=no])
-AM_CONDITIONAL(INSTALLED_TESTS, test "$enable_installed_tests" = "yes")
+              AS_HELP_STRING([--enable-installed-tests],
+                             [Install test programs (default: no)]),,
+              [enable_installed_tests=no])
+
+AM_CONDITIONAL(INSTALLED_TESTS, test "x$enable_installed_tests" = "xyes")
 
 # Introspection
 AX_REQUIRE_DEFINED([GOBJECT_INTROSPECTION_CHECK])