update zlib-ng to 2.0.6

deps/zlib-ng/include/zlib.h

@@ -46,11 +46,11 @@
 extern "C" {
 #endif
 
-#define ZLIBNG_VERSION "2.0.5"
-#define ZLIBNG_VERNUM 0x2050
+#define ZLIBNG_VERSION "2.0.6"
+#define ZLIBNG_VERNUM 0x2060
 #define ZLIBNG_VER_MAJOR 2
 #define ZLIBNG_VER_MINOR 0
-#define ZLIBNG_VER_REVISION 5
+#define ZLIBNG_VER_REVISION 6
 #define ZLIBNG_VER_SUBREVISION 0
 
 #define ZLIB_VERSION "1.2.11.zlib-ng"
@@ -1766,6 +1766,7 @@ Z_EXTERN int Z_EXPORT inflateBackInit_(z_stream *strm, int windowBits, unsigned
                         inflateBackInit_((strm), (windowBits), (window), ZLIB_VERSION, (int)sizeof(z_stream))
 
 
+#ifndef Z_SOLO
 /* gzgetc() macro and its supporting function and exposed data structure.  Note
  * that the real internal state is much larger than the exposed structure.
  * This abbreviated structure exposes just enough for the gzgetc() macro.  The
@@ -1796,6 +1797,7 @@ Z_EXTERN int Z_EXPORT gzgetc_(gzFile file);  /* backward compatibility */
    Z_EXTERN unsigned long Z_EXPORT crc32_combine64(unsigned long, unsigned long, z_off64_t);
    Z_EXTERN void Z_EXPORT crc32_combine_gen64(uint32_t *op, z_off64_t);
 #endif
+#endif
 
 #if !defined(Z_INTERNAL) && defined(Z_WANT64)
 #    define gzopen gzopen64
@@ -1834,10 +1836,12 @@ Z_EXTERN unsigned long    Z_EXPORT inflateCodesUsed (z_stream *);
 Z_EXTERN int              Z_EXPORT inflateResetKeep (z_stream *);
 Z_EXTERN int              Z_EXPORT deflateResetKeep (z_stream *);
 
+#ifndef Z_SOLO
 #if defined(_WIN32)
     Z_EXTERN gzFile Z_EXPORT gzopen_w(const wchar_t *path, const char *mode);
 #endif
 Z_EXTERN int Z_EXPORTVA gzvprintf(gzFile file, const char *format, va_list va);
+#endif
 
 #ifdef __cplusplus
 }