tigervnc: Set rtti true for frtti cppflag

Change-Id: I322c236c4c0b8577846fddfcf22d700c973275c3
Signed-off-by: micky387 <mickaelsaibi@free.fr>
diff --git a/common/Android.bp b/common/Android.bp
index 866a87e..661027f 100644
--- a/common/Android.bp
+++ b/common/Android.bp
@@ -105,6 +105,7 @@
         "-fexceptions",
         "-frtti",
     ],
+    rtti: true,
 
     shared_libs: [
         "libjpeg",