Fixed some more simple compile warnings in the examples.

docs/examples/getinmemory.c

@@ -26,7 +26,7 @@ struct MemoryStruct {
   size_t size;
 };
 
-void *myrealloc(void *ptr, size_t size)
+static void *myrealloc(void *ptr, size_t size)
 {
   /* There might be a realloc() out there that doesn't like reallocing
      NULL pointers, so we take care of it here */
@@ -36,7 +36,7 @@ void *myrealloc(void *ptr, size_t size)
     return malloc(size);
 }
 
-size_t
+static size_t
 WriteMemoryCallback(void *ptr, size_t size, size_t nmemb, void *data)
 {
   size_t realsize = size * nmemb;