-Werror=global-constructors for heapprofd_client_api.

Change-Id: I0e2b7bdfac6201bf297fe68dfa625b6d360c5875
Bug: 141241849
diff --git a/Android.bp b/Android.bp
index 1a7af3d..a0f9563 100644
--- a/Android.bp
+++ b/Android.bp
@@ -270,6 +270,8 @@
   ],
   cflags: [
     "-DPERFETTO_ANDROID_ASYNC_SAFE_LOG",
+    "-Werror=global-constructors",
+    "-Wglobal-constructors",
   ],
   include_dirs: [
     "bionic/libc",