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/sh.test b/tests/sh.test
index 1d228dcf..875a0df8 100755
--- a/tests/sh.test
+++ b/tests/sh.test
@@ -7,7 +7,7 @@
 if [ -z "$(which bash)" ]
 then
   echo "$SHOWSKIP: no bash alias"
-  continue 2>/dev/null
+  return 2>/dev/null
   exit
 fi