hotfix: let compilation work

When compiling in debug mode, the 'inline' semantics of C99 led to the errors:

/roux/w25/openairinterface5g/common/utils/LOG/log.c:479: undefined reference to `log_header'
libUTIL.a(log.c.o): In function `log_dump':
/roux/w25/openairinterface5g/common/utils/LOG/log.c:502: undefined reference to `log_header'
collect2: error: ld returned 1 exit status

Let's use static instead of inline.

common/utils/LOG/log.c

@@ -454,7 +454,7 @@ int rt =   pthread_getname_np(pthread_self(), threadname,bufsize) ;
    }
 }
 
-int inline log_header(char *log_buffer, int buffsize, int comp, int level,const char *format) {
+static int log_header(char *log_buffer, int buffsize, int comp, int level,const char *format) {
   char threadname[PR_SET_NAME];
 return  snprintf(log_buffer, buffsize , "%s%s[%s]%c %s %s%s",
   	   log_level_highlight_end[level],