gollvm: fix typo in checkpackage.sh script

Setup clause for LD_LIBRARY_PATH had a typo, which would cause
existing setting for $LD_LIBRARY_PATH to be lost.

Fixes golang/go#33255.

Change-Id: I9b198d6dcf25c69227b2e522c28fbcd4e1817e08
Reviewed-on: https://go-review.googlesource.com/c/gollvm/+/187437
Reviewed-by: Cherry Zhang <cherryyz@google.com>
diff --git a/libgo/checkpackage.sh b/libgo/checkpackage.sh
index 2144feb..4aada03 100644
--- a/libgo/checkpackage.sh
+++ b/libgo/checkpackage.sh
@@ -55,7 +55,7 @@
 done
 export GC
 export GOLIBS
-export LD_LIBRARY_PATH="${BINDIR}:${LD_LIBARY_PATH}"
+export LD_LIBRARY_PATH="${BINDIR}:${LD_LIBRARY_PATH}"
 if [ ! -z "${ADDTOPATH}" ]; then
   export PATH=${ADDTOPATH}:${PATH}
 fi