Fix an instance of -Wunused-but-set-variable.

Bug: chromium:1203071
Change-Id: I682e5e2fcbd8ebd41799f86a20a2e6110d6bebee
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3217911
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Peter Kasting <pkasting@chromium.org>
GitOrigin-RevId: dd539703805b9c289f4990f42f710bd3a68c41f1
diff --git a/snapshot/linux/debug_rendezvous_test.cc b/snapshot/linux/debug_rendezvous_test.cc
index c77e862..4754528 100644
--- a/snapshot/linux/debug_rendezvous_test.cc
+++ b/snapshot/linux/debug_rendezvous_test.cc
@@ -162,7 +162,9 @@
     ASSERT_GE(possible_mappings->Count(), 1u);
 
     std::unique_ptr<ElfImageReader> module_reader;
+#if !defined(OS_ANDROID)
     const MemoryMap::Mapping* module_mapping = nullptr;
+#endif
     const MemoryMap::Mapping* mapping = nullptr;
     while ((mapping = possible_mappings->Next())) {
       auto parsed_module = std::make_unique<ElfImageReader>();
@@ -172,7 +174,9 @@
           parsed_module->GetDynamicArrayAddress(&dynamic_address) &&
           dynamic_address == module.dynamic_array) {
         module_reader = std::move(parsed_module);
+#if !defined(OS_ANDROID)
         module_mapping = mapping;
+#endif
         break;
       }
     }