Bug 204434: JA IME: cursor position is off when text is not committed

This patch is for: fix crash when type chinese chars into composer
r=danm@netscape.com sr=sfraser@netscape.com

widget/src/windows/nsWindow.cpp

@@ -761,6 +761,7 @@ nsWindow::nsWindow() : nsBaseWidget()
     mIMECompClauseString = NULL;
     mIMECompClauseStringSize = 0;
     mIMECompClauseStringLength = 0;
+    mIMECursorPosition = 0;
     mIMEReconvertUnicode = NULL;
     mLeadByte = '\0';
     mBlurEventSuppressionLevel = 0;