pbuilderrc: use non-absolute name for libeatmydata library

pbuilderrc

@@ -7,7 +7,7 @@ AUTOCLEANAPTCACHE=yes
 # Use eatmydata in chroots (will cause chroot creation failure for pre-maverick chroots)
 # make sure to install eatmydata outside and inside the chroot
 # to comment out while bootsrapping
-export LD_PRELOAD="${LD_PRELOAD:+$LD_PRELOAD:}/usr/lib/libeatmydata/libeatmydata.so"
+export LD_PRELOAD="${LD_PRELOAD:+$LD_PRELOAD:}libeatmydata.so"
 
 # To use with a "tmpfs	/var/cache/pbuilder/build	tmpfs	defaults,size=2400M	0	0"-like fstab entry
 APTCACHEHARDLINK=no