Improve map insertions

snapshot/minidump/process_snapshot_minidump.cc

Index: snapshot/minidump/process_snapshot_minidump.cc
diff --git a/snapshot/minidump/process_snapshot_minidump.cc b/snapshot/minidump/process_snapshot_minidump.cc
index 256e429ecd2bbcd2cdea5df5b8918e410fd8eb7b..fa87981b5c2437e87d923f15bd53081c863c0381 100644
--- a/snapshot/minidump/process_snapshot_minidump.cc
+++ b/snapshot/minidump/process_snapshot_minidump.cc
@@ -309,16 +309,13 @@ bool ProcessSnapshotMinidump::InitializeModulesCrashpadInfo(
        ++crashpad_module_index) {
     const MinidumpModuleCrashpadInfoLink& minidump_link =
         minidump_links[crashpad_module_index];
-    if (module_crashpad_info_links->find(
-            minidump_link.minidump_module_list_index) !=
-        module_crashpad_info_links->end()) {
+    if (!module_crashpad_info_links
+             ->insert(std::make_pair(minidump_link.minidump_module_list_index,
+                                     minidump_link.location)).second) {
       LOG(WARNING)
           << "duplicate module_crashpad_info_list minidump_module_list_index "
           << minidump_link.minidump_module_list_index;
       return false;
-    } else {
-      module_crashpad_info_links->insert(std::make_pair(
-          minidump_link.minidump_module_list_index, minidump_link.location));
     }
   }