fix(pinelog): Cleanup unused parameter warnings

With a recent enough version, the compiler reports a number of unused
parameter warnings when Meson is configured with `--warnlevel=3`. This
commit addresses those warnings.

subprojects/pinelog/bench_pinelog.c

@@ -41,7 +41,7 @@ static void print_time_difference(const char *type, struct timespec *ts)
            type, tp_usec, tp_nsec, ret.tv_sec, ret.tv_nsec);
 }
 
-int main(int argc, char **argv)
+int main(void)
 {
     struct timespec ts_wall[2];
     struct timespec ts_cpu[2];

subprojects/pinelog/pinelog.c

@@ -348,6 +348,10 @@ void pinelog_log_message(int module, int level, const char *file, int line, cons
         #else
         fprintf(output_stream, "%s:%d ", file, line);
         #endif
+    #else
+        // Suppress unused parameter warnings
+        (void)file;
+        (void)line;
     #endif
 
     /* Set the module name if it is not the root */

subprojects/pinelog/test_pinelog.c

@@ -36,6 +36,7 @@ static size_t expected_len;
 
 time_t time(time_t *p)
 {
+    (void)p;
     // Override the time function from libc
     return 1636671600;
 }
@@ -196,7 +197,7 @@ static void tap_bailout(const char *msg)
     exit(1);
 }
 
-int main(int argc, char **argv)
+int main(void)
 {
     int fifo_fd[2];
     int flags;