when retrieving data from an inbuffer, no longer restrict ourselves to uint32

include/amqpcpp/inbuffer.h

@@ -128,7 +128,7 @@ public:
      *  @param  size
      *  @return char*
      */
-    const char *nextData(uint32_t size);
+    const char *nextData(size_t size);
 
     /**
      *  The checker may access private data

src/inbuffer.cpp

@@ -166,7 +166,7 @@ double InBuffer::nextDouble()
  *  @param  size
  *  @return char*
  */
-const char *InBuffer::nextData(uint32_t size)
+const char *InBuffer::nextData(size_t size)
 {
     // check if there is enough size
     BufferCheck check(this, size);