[lldb] Update crashlog.py to accept multiple results from mdfind

mdfind can return multiple results, some of which are not even dSYM
bundles, but Xcode archives (.xcrachive).

Currently, we end up concatenating the paths, which is obviously bogus.
This patch not only fixes that, but now also skips paths that don't have
a Contents/Resources/DWARF subdirectory.

rdar://81270312

Differential revision: https://reviews.llvm.org/D109263

lldb/examples/python/crashlog.py

@@ -293,18 +293,24 @@ def locate_module_and_debug_symbols(self):
                     return False
             if not self.resolved_path and not os.path.exists(self.path):
                 try:
-                    dsym = subprocess.check_output(
+                    mdfind_results = subprocess.check_output(
                         ["/usr/bin/mdfind",
-                         "com_apple_xcode_dsym_uuids == %s"%uuid_str]).decode("utf-8")[:-1]
-                    if dsym and os.path.exists(dsym):
-                        print(('falling back to binary inside "%s"'%dsym))
-                        self.symfile = dsym
+                         "com_apple_xcode_dsym_uuids == %s" % uuid_str]).decode("utf-8").splitlines()
+                    found_matching_slice = False
+                    for dsym in mdfind_results:
                         dwarf_dir = os.path.join(dsym, 'Contents/Resources/DWARF')
+                        if not os.path.exists(dwarf_dir):
+                            # Not a dSYM bundle, probably an Xcode archive.
+                            continue
+                        print('falling back to binary inside "%s"' % dsym)
+                        self.symfile = dsym
                         for filename in os.listdir(dwarf_dir):
-                            self.path = os.path.join(dwarf_dir, filename)
-                            if not self.find_matching_slice():
-                                return False
-                            break
+                           self.path = os.path.join(dwarf_dir, filename)
+                           if self.find_matching_slice():
+                              found_matching_slice = True
+                              break
+                        if found_matching_slice:
+                           break
                 except:
                     pass
             if (self.resolved_path and os.path.exists(self.resolved_path)) or (