ic_udpifc: fix initSndBufferPool forward declaration

The forward declaration at line 838 was

    static void initSndBufferPool();

which under C's old K&R rules means 'function with unspecified
arguments' — but the actual definition takes a SendBufferPool *:

    static void
    initSndBufferPool(SendBufferPool *p)

and the single caller at line 3677 passes &snd_buffer_pool. gcc
silently accepts the mismatch; Apple clang correctly rejects it
under -Wdeprecated-non-prototype. C2x will reject it on every
compiler. Match the forward declaration to the definition.

Author: avamingli

contrib/interconnect/udp/ic_udpifc.c

@@ -835,7 +835,7 @@ static void sendOnce(ChunkTransportState *transportStates, ChunkTransportStateEn
 static inline uint64 computeExpirationPeriod(MotionConn *conn, uint32 retry);
 
 static ICBuffer *getSndBuffer(MotionConn *conn);
-static void initSndBufferPool();
+static void initSndBufferPool(SendBufferPool *p);
 
 static void putIntoUnackQueueRing(UnackQueueRing *uqr, ICBuffer *buf, uint64 expTime, uint64 now);
 static void initUnackQueueRing(UnackQueueRing *uqr);