Fixed that tag[0] may be nil.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@8731 e93f8b46-1217-0410-a6f0-8f06a7374b81

diff --git a/vendor/plugins/rfpdf/lib/tcpdf.rb b/vendor/plugins/rfpdf/lib/tcpdf.rb
index 9f7fa1bb72df9ca5e4a741f8fe4b77a69ba7a1df..5ff5cd30f82761b4e180e0c2180c5c22fa5f8ce9 100755 (executable)
--- a/vendor/plugins/rfpdf/lib/tcpdf.rb
+++ b/vendor/plugins/rfpdf/lib/tcpdf.rb
@@ -3474,7 +3474,7 @@ class TCPDF
                                        #Extract attributes
                                        # get tag name
                                        tag = element.scan(/([a-zA-Z0-9]*)/).flatten.delete_if {|x| x.length == 0}
-                                       tag = tag[0].downcase;
+                                       tag = tag[0].to_s.downcase;
                                        
                                        # get attributes
                                        attr_array = element.scan(/([^=\s]*)=["\']?([^"\']*)["\']?/)
@@ -3497,7 +3497,7 @@ class TCPDF
                                        #Extract attributes
                                        # get tag name
                                        tag = element.scan(/([a-zA-Z0-9]*)/).flatten.delete_if {|x| x.length == 0}
-                                       tag = tag[0].downcase;
+                                       tag = tag[0].to_s.downcase;
                                        
                                        # get attributes
                                        attr_array = element.scan(/([^=\s]*)=["\']?([^"\']*)["\']?/)