[libpng15] Changed "PNG_EXTERN" to "extern" in sRGB table declarations
in pngpriv.h
diff --git a/pngpriv.h b/pngpriv.h
index c129740..04cf552 100644
--- a/pngpriv.h
+++ b/pngpriv.h
@@ -519,14 +519,14 @@
#if defined PNG_SIMPLIFIED_READ_SUPPORTED ||\
defined PNG_SIMPLIFIED_WRITE_SUPPORTED
#ifdef PNG_SIMPLIFIED_READ_SUPPORTED
-PNG_EXTERN /*PRIVATE*/ png_uint_16 png_sRGB_table[256];
+extern /*PRIVATE*/ png_uint_16 png_sRGB_table[256];
/* Convert from an sRGB encoded value 0..255 to a 16-bit linear value,
* 0..65535. This table gives the closes 16-bit answers (no errors).
*/
#endif
-PNG_EXTERN /*PRIVATE*/ png_uint_16 png_sRGB_base[512];
-PNG_EXTERN /*PRIVATE*/ png_byte png_sRGB_delta[512];
+extern /*PRIVATE*/ png_uint_16 png_sRGB_base[512];
+extern /*PRIVATE*/ png_byte png_sRGB_delta[512];
#define PNG_sRGB_FROM_LINEAR(linear) ((png_sRGB_base[(linear)>>15] +\
((((linear)&0x7fff)*png_sRGB_delta[(linear)>>15])>>12)) >> 8)