fix uninitlized variable in logger and remove delegating ctor

lib/include/srslte/common/log.h

@@ -70,6 +70,7 @@ public:
     level = LOG_LEVEL_NONE;
     hex_limit = 0;
     show_layer_en = true;
+    level_text_short = true;
   }
 
   log(std::string service_name_) {
@@ -78,6 +79,7 @@ public:
     level = LOG_LEVEL_NONE;
     hex_limit = 0;
     show_layer_en = true;
+    level_text_short = true;
   }
 
   // This function shall be called at the start of every tti for printing tti

lib/src/common/log_filter.cc

@@ -43,14 +43,18 @@ log_filter::log_filter()
 }
 
 log_filter::log_filter(std::string layer)
-  :log_filter()
 {
+  do_tti      = false;
+  time_src    = NULL;
+  time_format = TIME;
   init(layer, &def_logger_stdout, tti);
 }
 
 log_filter::log_filter(std::string layer, logger *logger_, bool tti)
-  :log_filter()
 {
+  do_tti      = false;
+  time_src    = NULL;
+  time_format = TIME;
   init(layer, logger_, tti);
 }