Fixed bug in asDouble.

ZString.cpp

@@ -145,13 +145,12 @@ namespace coreutils {
 	      return value;
 	 }	 
       }
-      if(*cursor != '.') 
+      if(*cursor != '.') {	   
-	if(cursor == end) {
+	 if(negative)
-	   if(negative)
+	   return -value;
-	     return -value;
+	 else
-	   else
+	   return value;
-	     return value;
+      }	       
-	}	       
       ++cursor;
       if(cursor == end) {
 	 if(negative)