[devel] Changed some "#if defined(" to "ifdef"
diff --git a/png.c b/png.c
index 4e4ac1d..b5f4161 100644
--- a/png.c
+++ b/png.c
@@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
- * Last changed in libpng 1.4.0 [September 17, 2009]
+ * Last changed in libpng 1.4.0 [September 23, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -251,7 +251,7 @@
if (png_ptr == NULL || info_ptr == NULL)
return;
-#if defined(PNG_TEXT_SUPPORTED)
+#ifdef PNG_TEXT_SUPPORTED
/* Free text item num or (if num == -1) all text items */
if ((mask & PNG_FREE_TEXT) & info_ptr->free_me)
{
@@ -275,7 +275,7 @@
}
#endif
-#if defined(PNG_tRNS_SUPPORTED)
+#ifdef PNG_tRNS_SUPPORTED
/* Free any tRNS entry */
if ((mask & PNG_FREE_TRNS) & info_ptr->free_me)
{
@@ -285,7 +285,7 @@
}
#endif
-#if defined(PNG_sCAL_SUPPORTED)
+#ifdef PNG_sCAL_SUPPORTED
/* Free any sCAL entry */
if ((mask & PNG_FREE_SCAL) & info_ptr->free_me)
{
@@ -299,7 +299,7 @@
}
#endif
-#if defined(PNG_pCAL_SUPPORTED)
+#ifdef PNG_pCAL_SUPPORTED
/* Free any pCAL entry */
if ((mask & PNG_FREE_PCAL) & info_ptr->free_me)
{
@@ -322,7 +322,7 @@
}
#endif
-#if defined(PNG_iCCP_SUPPORTED)
+#ifdef PNG_iCCP_SUPPORTED
/* Free any iCCP entry */
if ((mask & PNG_FREE_ICCP) & info_ptr->free_me)
{
@@ -334,7 +334,7 @@
}
#endif
-#if defined(PNG_sPLT_SUPPORTED)
+#ifdef PNG_sPLT_SUPPORTED
/* Free a given sPLT entry, or (if num == -1) all sPLT entries */
if ((mask & PNG_FREE_SPLT) & info_ptr->free_me)
{
@@ -365,7 +365,7 @@
}
#endif
-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
if (png_ptr->unknown_chunk.data)
{
png_free(png_ptr, png_ptr->unknown_chunk.data);
@@ -399,7 +399,7 @@
}
#endif
-#if defined(PNG_hIST_SUPPORTED)
+#ifdef PNG_hIST_SUPPORTED
/* Free any hIST entry */
if ((mask & PNG_FREE_HIST) & info_ptr->free_me)
{
@@ -418,7 +418,7 @@
info_ptr->num_palette = 0;
}
-#if defined(PNG_INFO_IMAGE_SUPPORTED)
+#ifdef PNG_INFO_IMAGE_SUPPORTED
/* Free any image bits attached to the info structure */
if ((mask & PNG_FREE_ROWS) & info_ptr->free_me)
{
@@ -452,7 +452,7 @@
png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
-#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
if (png_ptr->num_chunk_list)
{
png_free(png_ptr, png_ptr->chunk_list);
@@ -496,7 +496,7 @@
}
#endif
-#if defined(PNG_TIME_RFC1123_SUPPORTED)
+#ifdef PNG_TIME_RFC1123_SUPPORTED
/* Convert the supplied time into an RFC 1123 string suitable for use in
* a "Creation Time" or other text-based time string.
*/
@@ -546,13 +546,13 @@
#else
#ifdef __STDC__
return ((png_charp) PNG_STRING_NEWLINE \
- "libpng version x 1.4.0beta81 - September 17, 2009" PNG_STRING_NEWLINE \
+ "libpng version x 1.4.0beta81 - September 23, 2009" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2009 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE);
#else
- return ((png_charp) "libpng version 1.4.0beta81 - September 17, 2009\
+ return ((png_charp) "libpng version 1.4.0beta81 - September 23, 2009\
Copyright (c) 1998-2009 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");
@@ -652,8 +652,8 @@
#endif /* PNG_SIZE_T */
/* Added at libpng version 1.2.34 and 1.4.0 (moved from pngset.c) */
-#if defined(PNG_cHRM_SUPPORTED)
-#if defined(PNG_CHECK_cHRM_SUPPORTED)
+#ifdef PNG_cHRM_SUPPORTED
+#ifdef PNG_CHECK_cHRM_SUPPORTED
/*
* Multiply two 32-bit numbers, V1 and V2, using 32-bit