[librsvg: 1/2] Avoid unportable test(1) operator

[Federico Mena Quintero <federico src gnome org>]

commit 5838eacc34a3e2823beae59b62d135844bfa426c
Author: Maya Rashish <coypu sdf org>
Date:   Tue Nov 27 14:02:48 2018 +0200

    Avoid unportable test(1) operator
    
    = and == are both string comparisons, but only '=' is part of POSIX.

 configure.ac | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 2ed2d284..ece758bd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -268,7 +268,7 @@ AC_ARG_ENABLE(debug,
                              [Build Rust code with debugging information [default=no]]),
               [debug_release=$enableval],
              [
-               if test "x$LIBRSVG_DEBUG" == "x"; then
+               if test "x$LIBRSVG_DEBUG" = "x"; then
                  debug_release="no"
                elif test "x$LIBRSVG_DEBUG" = "xyes"; then
                  debug_release="yes"
@@ -288,7 +288,7 @@ fi
 AM_CONDITIONAL([DEBUG_RELEASE], [test "x$debug_release" = "xyes"])
 
 AC_ARG_VAR(RUST_TARGET, [Set rust target (default=$host)])
-if test "x$RUST_TARGET" == x; then
+if test "x$RUST_TARGET" = x; then
        RUST_TARGET=$host
 fi