const string cleanup

src/query/docseq.cpp

@@ -81,7 +81,7 @@ bool DocSource::buildStack()
 string DocSource::title()
 {
     if (m_seq.isNull())
-	return "";
+	return string();
     string qual;
     if (m_fspec.isNotNull() && !m_sspec.isNotNull())
 	qual = string(" (") + o_filt_trans + string(")");

src/query/reslistpager.cpp

@@ -27,6 +27,7 @@
 using std::ostringstream;
 using std::endl;
 
+#include "cstr.h"
 #include "reslistpager.h"
 #include "debuglog.h"
 #include "rclconfig.h"
@@ -384,7 +385,7 @@ string ResListPager::iconPath(RclConfig *config, const string& mtype)
 {
     string iconpath;
     config->getMimeIconName(mtype, &iconpath);
-    iconpath = string("file://") + iconpath;
+    iconpath = cstr_fileu + iconpath;
     return iconpath;
 }