Suppress the error warning

Bug: https://android-build.googleplex.com/builds/pending/P51300433/aosp_bramble-userdebug/latest/view/logs/build_error.log
Test: None
Change-Id: I2fbd3d8772c50ed9de1c2ba9eb2234966c7dcb84
diff --git a/debuggerd/crasher/crasher.cpp b/debuggerd/crasher/crasher.cpp
index 4eb7382..4043a6e 100644
--- a/debuggerd/crasher/crasher.cpp
+++ b/debuggerd/crasher/crasher.cpp
@@ -159,7 +159,8 @@
 }
 
 noinline void fprintf_null() {
-    fprintf(nullptr, "oops");
+    FILE* sneaky_null = nullptr;
+    fprintf(sneaky_null, "oops");
 }
 
 noinline void readdir_null() {