[PATCH 4/7] Fix two -Wnarrowing warnings in xtensa-tdep.h

[Tom Tromey <tom@tromey.com>]

This fixes a couple of -Wnarrowing warnings in xtensa-tdep.h, by
introducing some casts to unsigned.

gdb/ChangeLog
2018-08-08  Tom Tromey  <tom@tromey.com>

	* xtensa-tdep.h (XTREG_END): Add cast to unsigned.
	(XTENSA_GDBARCH_TDEP_INSTANTIATE): Likewise.
---
 gdb/ChangeLog     | 5 +++++
 gdb/xtensa-tdep.h | 4 ++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/gdb/xtensa-tdep.h b/gdb/xtensa-tdep.h
index ccd3714640..d170e054d4 100644
--- a/gdb/xtensa-tdep.h
+++ b/gdb/xtensa-tdep.h
@@ -130,7 +130,7 @@ typedef struct
 	 ct, bsz, sz, al, tnum, flg, cp, mas, fet, sto},
 #define XTREG_END \
   {0, 0, (xtensa_register_type_t) 0, (xtensa_register_group_t) 0,	\
-   0, 0, 0, 0, -1, 0, 0, 0, 0, 0},
+   0, 0, 0, 0, (unsigned) -1, 0, 0, 0, 0, 0},
 
 #define XTENSA_REGISTER_FLAGS_PRIVILEGED	0x0001
 #define XTENSA_REGISTER_FLAGS_READABLE		0x0002
@@ -228,7 +228,7 @@ struct gdbarch_tdep
 #define XTENSA_GDBARCH_TDEP_INSTANTIATE(rmap,spillsz)			\
   {									\
     0,				/* target_flags */			\
-    -1,				/* spill_location */			\
+    (unsigned) -1,		/* spill_location */	\
     (spillsz),			/* spill_size */			\
     0,				/* unused */				\
     (XSHAL_ABI == XTHAL_ABI_CALL0					\
-- 
2.13.6