enable zlib for all compression modes

tmxlite/src/FreeFuncs.cpp

@@ -24,8 +24,12 @@ and must not be misrepresented as being the original software.
 3. This notice may not be removed or altered from any
 source distribution.
 *********************************************************************/
+#ifdef USE_ZIP_LIB
+  #include <zlib.h>
+#else
+  #include "miniz.h"
+#endif // ZIP_LIB_USED
 
-#include "miniz.h"
 #include <tmxlite/FreeFuncs.hpp>
 #include <tmxlite/detail/Log.hpp>
 
@@ -50,12 +54,17 @@ bool tmx::decompress(const char* source, std::vector<unsigned char>& dest, std::
     stream.next_out = (Bytef*)byteArray.data();
     stream.avail_out = static_cast<unsigned int>(expectedSize);
 
-    //we'd prefer to use inflateInit2 but it appears 
+    //we'd prefer to use inflateInit2 but it appears
     //to be incorrect in miniz. This is fine for zlib
     //compressed data, but gzip compressed streams
     //will fail to inflate. IMO still preferable to
     //trying to build/link zlib
-    if (inflateInit(&stream/*, 15 + 32*/) != Z_OK)
+#ifdef USE_ZIP_LIB
+    if (inflateInit2(&stream, 15 + 32) != Z_OK)
+#else
+    if (inflateInit(&stream) != Z_OK)
+#endif // ZIP_LIB_USED
+
     {
         LOG("inflate init failed", Logger::Type::Error);
         return false;
@@ -112,4 +121,4 @@ bool tmx::decompress(const char* source, std::vector<unsigned char>& dest, std::
     dest.insert(dest.begin(), byteArray.begin(), byteArray.end());
 
     return true;
-}
+}