Fix run-gtests.sh for both 32- and 64-bit tests.

When running both sets, the script was concatenating the
last test from first set with the first test from the
second set.

Test: run-gtests.sh for full aosp_taimen-userdebug build.
Change-Id: I49a1b0f3f50305d412daeec1449481d138a0c635
1 file changed