bug 100649: Length() being used where IsEmpty() is meant

treewide changes to convert incorrect usages of string.Length() to string.IsEmpty().

thanks to afatecha@idea.com.py (Ariel Fatecha) for the patch. r=dwitte, sr=jst.

got the ok from Asa to land into a closed tree.


git-svn-id: svn://10.0.0.236/trunk@142828 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/extensions/xmlterm/base/mozLineTerm.cpp

@@ -544,7 +544,7 @@ NS_IMETHODIMP mozLineTerm::Write(const PRUnichar *buf,
     nsAutoString timeStamp;
     result = mozXMLTermUtils::TimeStamp(60, mLastTime, timeStamp);
 
-    if (NS_SUCCEEDED(result) && (timeStamp.Length() > 0)) {
+    if (NS_SUCCEEDED(result) && !timeStamp.IsEmpty()) {
       char* temStr = ToNewCString(timeStamp);
       PR_LogPrint("<TS %s>\n", temStr);
       nsMemory::Free(temStr);