logging: only fallback to stderr on NULL nc for error/warn

src/lib/internal.h

@@ -795,26 +795,22 @@ int get_controlling_tty(void);
 #define loginfo(nc, fmt, ...) do{ \
   if(nc){ if((nc)->loglevel >= NCLOGLEVEL_INFO){ \
     nclog("%s:%d:" fmt, __func__, __LINE__, ##__VA_ARGS__); } \
-  }else{ fprintf(stderr, "%s:%d:" fmt, __func__, __LINE__, ##__VA_ARGS__); } \
-}while(0);
+  } }while(0);
 
 #define logverbose(nc, fmt, ...) do{ \
   if(nc){ if((nc)->loglevel >= NCLOGLEVEL_VERBOSE){ \
     nclog("%s:%d:" fmt, __func__, __LINE__, ##__VA_ARGS__); } \
-  }else{ fprintf(stderr, "%s:%d:" fmt, __func__, __LINE__, ##__VA_ARGS__); } \
-}while(0);
+  } }while(0);
 
 #define logdebug(nc, fmt, ...) do{ \
   if(nc){ if((nc)->loglevel >= NCLOGLEVEL_DEBUG){ \
     nclog("%s:%d:" fmt, __func__, __LINE__, ##__VA_ARGS__); } \
-  }else{ fprintf(stderr, "%s:%d:" fmt, __func__, __LINE__, ##__VA_ARGS__); } \
-}while(0);
+  } }while(0);
 
 #define logtrace(nc, fmt, ...) do{ \
   if(nc){ if((nc)->loglevel >= NCLOGLEVEL_TRACE){ \
     nclog("%s:%d:" fmt, __func__, __LINE__, ##__VA_ARGS__); } \
-  }else{ fprintf(stderr, "%s:%d:" fmt, __func__, __LINE__, ##__VA_ARGS__); } \
-}while(0);
+  } }while(0);
 
 // Convert a notcurses log level to some multimedia library equivalent.
 int ffmpeg_log_level(ncloglevel_e level);