Modify none/tests/execve.c so to avoid infinite loop with --trace-children=yes

With --trace-children=yes, none/test/execve exec ve forever.

This avoids an infinite loop when running outer on inner regression
tests (for which --trace-children=yes is mandatory for the outer).



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12440 a5019735-40e9-0310-863c-91ae7b9d1cf9
1 file changed