fix: base64 images not rendered inside of html

CHANGELOG.TXT

@@ -280,7 +280,7 @@
 	- Bug item #956 "Monospaced fonts are not alignd at the baseline" was fixed.
 	- Bug item #964 "Problem when changing font size" was fixed.
 	- Bug item #969 "ImageSVG with radialGradient problem" was fixed.
-	- sRGB.icc file was replaced with the one from the Debian package icc-profiles-free (2.0.1+dfsg-1) 
+	- sRGB.icc file was replaced with the one from the Debian package icc-profiles-free (2.0.1+dfsg-1)
 
 6.0.091 (2014-08-13)
 	- Issue #325"Division by zero when css fontsize equals 0" was fixed.
@@ -289,7 +289,7 @@
 	- Starting from this version TCPDF is also available in GitHub at https://github.com/tecnickcom/TCPDF
 	- Function getmypid() was removed for better compatibility with shared hosting environments.
 	- Support for pulling SVG stroke opacity value from RGBa color was mergeg [adf006].
-	- Bug item #951 "HTML Table within TCPDF columns doesnt flow correctly on page break ..." was fixed. 
+	- Bug item #951 "HTML Table within TCPDF columns doesnt flow correctly on page break ..." was fixed.
 
 6.0.089 (2014-07-16)
 	- Bug item #948 "bottom line of rowspan cell not work correctly" was fixed.

include/tcpdf_static.php

@@ -1876,6 +1876,9 @@ public static function file_exists($filename) {
 		if (preg_match('|^https?://|', $filename) == 1) {
 			return self::url_exists($filename);
 		}
+		if (stripos($filename, 'data:') === 0) {
+			return true;
+		}
 		if (strpos($filename, '://')) {
 			return false; // only support http and https wrappers for security reasons
 		}