[Wconversion] Suppress warnings

Bug: 5816
Change-Id: Ife683e0751ff8dd47e1339e85a257ead71d2d9b7
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/glog/+/426266
Reviewed-by: David Turner <digit@google.com>
diff --git a/BUILD.gn b/BUILD.gn
index 0dc7398..4c1642c 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -30,6 +30,7 @@
 config("glog_config") {
   visibility = [ ":*" ]
   include_dirs = [ "src" ]
+  cflags = [ "-Wno-conversion" ]
 }
 
 static_library("glog") {
@@ -47,10 +48,6 @@
 
   if (current_os == "linux") {
     defines = [ "HAVE_SYSCALL_H" ]
-    cflags_cc = [
-      "-Wno-sign-compare",
-      "-Wno-conversion",
-    ]
+    cflags_cc = [ "-Wno-sign-compare" ]
   }
-  cflags = [ "-Wno-conversion" ]
 }