dnsapi: Void functions should not return a value

[Andrew Talbot]

Changelog:
    dnsapi: Void functions should not return a value.

diff --git a/dlls/dnsapi/record.c b/dlls/dnsapi/record.c
index e9252ef..ae31316 100644
--- a/dlls/dnsapi/record.c
+++ b/dlls/dnsapi/record.c
@@ -645,7 +645,7 @@ VOID WINAPI DnsRecordListFree( PDNS_RECORD list, DNS_FREE_TYPE type )
  */
 void WINAPI DnsFree( PVOID data, DNS_FREE_TYPE type )
 {
-    return DnsRecordListFree( data, type );
+    DnsRecordListFree( data, type );
 }
 
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