Revert calling clear on std::string because it does not work in VC6

Author: xezon

Core/Tools/CRCDiff/expander.cpp

@@ -45,7 +45,7 @@ void Expander::expand( const std::string& input,
 		std::string& output,
 		bool stripUnknown )
 {
-	output.clear();
+	output = "";
 	unsigned int pos = input.find(m_left);
 	unsigned int lastpos = input.npos;
 	while (pos != input.npos)

Core/Tools/DebugWindow/DebugWindowDialog.cpp

@@ -151,7 +151,7 @@ void DebugWindowDialog::_RebuildVarsString(void)
 {
 	int cursorPosBeg, cursorPosEnd;
 	((CEdit*)GetDlgItem(IDC_Variables))->GetSel(cursorPosBeg, cursorPosEnd);
-	mVariablesString.clear();
+	mVariablesString = "";
 
 	for (VecPairStringIt it = mVariables.begin(); it != mVariables.end(); it++) {
 		mVariablesString += it->first;
@@ -170,7 +170,7 @@ void DebugWindowDialog::_RebuildVarsString(void)
 
 void DebugWindowDialog::_RebuildMesgString(void)
 {
-	mMessagesString.clear();
+	mMessagesString = "";
 
 	for (VecStringIt it = mMessages.begin(); it != mMessages.end(); it++) {
 		mMessagesString += (*it);