cleanup for valgrind.

ZString.cpp

@@ -66,8 +66,10 @@ namespace coreutils {
    }
 
    ZString::~ZString() {
-      if(cdata != NULL)
-        free(cdata);
+      if(cdata != NULL) {
+	 std::cout << "********" << cdata << "********" << strlen(cdata) << std::endl;	   
+	 free(cdata);
+      }      
    }
 
    bool ZString::operator<(const ZString &valuex) const {
@@ -443,8 +445,12 @@ namespace coreutils {
    }
    
    int ZString::skipWhitespace() {
-      int len = strspn(cursor, " \n\t");
-      cursor += len;
+      char *end = data + length;
+      int len = 0;
+      while((cursor < end) && ((*cursor == ' ') || (*cursor == '\n') || (*cursor == '\t'))) {
+	 ++cursor;
+	 ++len;
+      }      
       return len;
    }