[tracker] build: Fix error message when evolution requirements are missing

[Martyn James Russell <mr src gnome org>]

commit 9840942ffe6e8b768348e5589f6a4100c3f3ad96
Author: Martyn Russell <martyn lanedo com>
Date:   Thu Feb 17 09:26:47 2011 +0000

    build: Fix error message when evolution requirements are missing

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 7282529..b9b5468 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1106,7 +1106,7 @@ enable_tracker_miner_evolution=$enable_miner_evolution
 
 if test "x$enable_tracker_miner_evolution" = "xyes"; then
    if test "x$have_tracker_miner_evolution" != "xyes"; then
-      AC_MSG_ERROR([Couldn't find Tracker Evolution plugin ($TRACKER_EVOLUTION_PLUGIN_REQUIRED).])
+      AC_MSG_ERROR([Couldn't find Tracker Evolution plugin ($TRACKER_MINER_EVOLUTION_REQUIRED).])
    fi
 else
    if test "x$enable_tracker_miner_evolution" = "xno"; then