Fixed a number of uses of uninitialized variables by adding assertions

or other sanity checks, code reshuffling, or fixing broken behavior.

lib/stdio/doprnt.c

@@ -107,6 +107,7 @@ o_print(va_list *ap, int flags, char *s, char c, int precision, int is_signed)
 	case 'x':
 	case 'X':
 	case 'p':	base = 16;	break;
+	default:	base = 10;	break;
 	}
 
 	s = _i_compute(unsigned_val, base, s, precision);

lib/stdio/doscan.c

@@ -46,6 +46,7 @@ o_collect(register int c, register FILE *stream, char type,
 	case 'u':	base = 10;	break;
 	case 'o':	base = 8;	break;
 	case 'b':	base = 2;	break;
+	default:	base = 10;	break;
 	}
 
 	if (c == '-' || c == '+') {