Use `return` rather than `continue` to make bash 4.4 happy.

Otherwise we get this error:

  continue: only meaningful in a 'for', 'while', or 'until' loop

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/useradd.test b/tests/useradd.test
index d0b68ee6..1567f2f1 100755
--- a/tests/useradd.test
+++ b/tests/useradd.test
@@ -8,7 +8,7 @@
 if [ "$(id -u)" -ne 0 ]
 then
   echo "$SHOWSKIP: useradd (not root)"
-  continue 2>/dev/null
+  return 2>/dev/null
   exit
 fi