Fix infinite loop in logger.

When there where was more arguments then "{}" in the format string
program hanged up due to infinite loop in format function.

Signed-off-by: Łukasz Plewa <lukasz.plewa@intel.com>

source/common/logger/ur_sinks.hpp

@@ -110,6 +110,14 @@ class Sink {
  << std::endl;
  }
  }
+
+ if (*fmt == '\0') {
+ std::cerr << error_prefix
+ << "Too many arguments!" << std::endl;
+ // ignore all left arguments and finalize message
+ format(buffer, fmt);
+ return;
+ }
  }
 
  format(buffer, ++fmt, std::forward<Args &&>(args)...);