[master] Use the new PNG_CONVERT_tIME_SUPPORTED macro in pngwrite.c.

pngwrite.c

@@ -423,8 +423,7 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
 #endif
 }
 
-#ifdef PNG_WRITE_tIME_SUPPORTED
-#ifndef _WIN32_WCE
+#ifdef PNG_CONVERT_tIME_SUPPORTED
 /* "tm" structure is not supported on WindowsCE */
 void PNGAPI
 png_convert_from_struct_tm(png_timep ptime, struct tm FAR * ttime)
@@ -450,7 +449,6 @@ png_convert_from_time_t(png_timep ptime, time_t ttime)
    png_convert_from_struct_tm(ptime, tbuf);
 }
 #endif
-#endif
 
 /* Initialize png_ptr structure, and allocate any memory needed */
 png_structp PNGAPI