Ignore clang warning

Clang warns on this enum no matter what we do.  Rather than adding all
27 entries of the boost::beast::verb to this, lets just ignore the
   warning.

Tested: Code compiles on clang without warnings

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: Iba5809d8f855abe7f040d81d6052eb385be8f5a1
diff --git a/meson.build b/meson.build
index 997dd1d..1c306f2 100644
--- a/meson.build
+++ b/meson.build
@@ -155,6 +155,7 @@
     '-Wno-shadow',
     '-Wno-used-but-marked-unused',
     '-Wno-weak-vtables',
+    '-Wno-switch-enum',
   ]),
   language:'cpp')
 endif