Emit the dex_pc if the line number is absent.

bug:30183883
Test: test-art-host run-libcore-tests run-jdwp-tests
Test: art/test/638-no-line-number/

Change-Id: I5ab54620b2bfba1059543696ff7310b8496b1893
diff --git a/test/638-no-line-number/info.txt b/test/638-no-line-number/info.txt
new file mode 100644
index 0000000..89e6432
--- /dev/null
+++ b/test/638-no-line-number/info.txt
@@ -0,0 +1 @@
+Test for b/30183883, that we emit the dex pc when the line number is missing.