fix derp in sspt-strace

local/libexec/sspt/sspt-strace

@@ -91,7 +91,7 @@ main() {
                 exit 1
             fi
 
-            (. "$SSPT_SRC_DIR/$(escape_string "$1")/.sspt"; \
+            (. "$SSPT_DL_DIR/$(escape_string "$1")/.sspt"; \
                 [ "$SSPT_TRACK_FILES" = "no" ] && exit 1 || exit 0)
             if [ $? -eq 0 ]; then
                 run_strace "$@"