reckless: fix installer search

Some installer procedures have more options for valid entypoint
names than others. We iterate through each of their first choices,
then their second choices, etc..

tools/reckless

@@ -821,6 +821,9 @@ class InferInstall():
             for tier in range(0, 10):
                 # Look for each installers preferred entrypoint format first
                 for inst in INSTALLERS:
+                    # All of this installer's entrypoint options exhausted.
+                    if tier >= len(inst.entries):
+                        continue
                     fmt = inst.entries[tier]
                     if '{name}' in fmt:
                         pre = fmt.split('{name}')[0]