CI: Add warning exemptions for Sun C (suncc-5.15) on Solaris 10

Author: fxlb

build.sh

@@ -40,7 +40,7 @@ tcc-*/*)
     #   target type
     TCPDUMP_TAINTED=yes
     ;;
-suncc-5.14/SunOS-5.10)
+suncc-5.14/SunOS-5.10|suncc-5.15/SunOS-5.10)
     # "tcpdump.c", line 347: warning: function "exit_tcpdump" marked as not
     #   returning, might return
     # "netdissect.c", line 317: warning: function "nd_trunc_longjmp" marked as