[tracker] build: Fix error message when running configure for tracker-miner-fs

[Martyn James Russell <mr src gnome org>]

commit 2ea889af59d2d83866ea79fbb575c061212f143e
Author: Luis Menina <luis menina softathome com>
Date:   Mon Mar 17 15:59:14 2014 +0000

    build: Fix error message when running configure for tracker-miner-fs
    
    Bad spacing on variable assignment caused an error message:
    "enable_tracker_miner_fs: command not found"
    
    https://bugzilla.gnome.org/show_bug.cgi?id=726552

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 0f0d8df..e4856cb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1404,7 +1404,7 @@ AC_ARG_ENABLE([tracker-preferences],
 # If we don't have miner-fs enabled, the preferences are pointless
 # So we override in this case.
 if test "x$enable_tracker_miner_fs" = "xyes" ; then
-   enable_tracker_miner_fs = "no"
+   enable_tracker_miner_fs="no"
 fi
 
 if test "x$enable_tracker_preferences" = "xyes" ; then