Replace rfb::strDup by safe_strdup and remove rfb::strFree in favor of free()


git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@3889 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/rfb/ConnParams.cxx b/common/rfb/ConnParams.cxx
index 7b27a73..4bbd2cb 100644
--- a/common/rfb/ConnParams.cxx
+++ b/common/rfb/ConnParams.cxx
@@ -82,7 +82,7 @@
 void ConnParams::setName(const char* name)
 {
   delete [] name_;
-  name_ = strDup(name);
+  name_ = safe_strdup(name);
 }
 
 void ConnParams::setEncodings(int nEncodings, const rdr::U32* encodings)