new smatch

@@ -8,12 +8,10 @@
  *  - zeroed anonymous mmap
  *      Missing in MinGW
  *  - "string to long double" (C99 strtold())
  *      Missing in Solaris and MinGW
  */
-struct stream;
-struct stat;
 
 /*
  * Our "blob" allocator works on chunks that are multiples
  * of this size (the underlying allocator may be a mmap that
  * cannot handle smaller chunks, for example, so trying to