fix detection of zstd

This fixes an issue where if the curl lib is not found, then zstd will
not be supported.

The detection method for both curl and zstd uses a shell variable 'error'.
Unless we unset the variable afterward, the results of the curl check
carry over to the zstd check.

diff --git a/bacula/autoconf/configure.in b/bacula/autoconf/configure.in
index 5660f69b1c520134bcf731457d0928751178ac69..24ec76a2953c2aa92d545451c52b1bc47e7d626f 100644 (file)
--- a/bacula/autoconf/configure.in
+++ b/bacula/autoconf/configure.in
@@ -982,7 +982,9 @@ AC_CHECK_LIB(curl,curl_version_info,,[error="Can't find CURL library."])
 
 if test x"${error}" == "x"; then
    support_curl=yes
-fi 
+fi
+
+unset error
 
 AC_MSG_RESULT([$support_curl])
 if test "$support_curl" = "yes"; then
@@ -1043,6 +1045,8 @@ else
     ZSTD_INC=""
 fi
 
+unset error
+
 AC_MSG_RESULT([$support_zstd])
 if test "$support_zstd" = "yes"; then
    AC_DEFINE(HAVE_ZSTD, 1, [Define if ZSTD library is available])