util/nvramtool: Mark out_of_memory() as noreturn

This silences several false positives from scan-build.

Change-Id: I327a967c75d6aeec0b3aba16ee696dbae8cf997d
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33950
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Martin Roth <martinroth@google.com>

util/nvramtool/common.c

@@ -56,7 +56,7 @@ int get_line_from_file(FILE * f, char line[], int line_buf_size)
  *
  * We ran out of memory.  Print an error message and die.
  ****************************************************************************/
-void out_of_memory(void)
+_Noreturn void out_of_memory(void)
 {
 	fprintf(stderr, "%s: Out of memory.\n", prog_name);
 	exit(1);