Make temp directory if not present.

Change-Id: Ib31c8c4cbd791a318c80075bf56cdbea172744b5

tools/run_on_app_dump.py

diff --git a/tools/run_on_app_dump.py b/tools/run_on_app_dump.py
index 6035752..948fb7c 100755
--- a/tools/run_on_app_dump.py
+++ b/tools/run_on_app_dump.py
@@ -1151,6 +1151,7 @@
   with utils.TempDir() as temp_dir:
     if options.temp:
       temp_dir = options.temp
+      os.makedirs(temp_dir, exist_ok=True)
     if options.hash:
       # Download r8-<hash>.jar from
       # https://storage.googleapis.com/r8-releases/raw/.