Small env var fix

Signed-off-by: Scott Wilson <scott@propersquid.com>

Author: scott-wilson

src/build-scripts/ci-rust-test.bash

@@ -11,12 +11,8 @@ if [[ "${CODECOV}" == "" ]]; then
     set -ex
 fi
 
-export LD_LIBRARY_PATH=$OpenImageIO_ROOT/lib
-export PKG_CONFIG_PATH=$OpenImageIO_ROOT/lib/pkgconfig
-
-# TEST
-echo TEST GET LIBRARY PATH CONTENTS $(ls $LD_LIBRARY_PATH)
-# END TEST
+export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$OpenImageIO_ROOT/lib
+export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:$OpenImageIO_ROOT/lib/pkgconfig
 
 echo "Running Rust oiio-sys tests"