Fix:

  hw/m68k/virt.c:263:13: error: declaration shadows a local variable [-Werror,-Wshadow]
            BOOTINFOSTR(param_ptr, BI_COMMAND_LINE,
            ^
  hw/m68k/bootinfo.h:47:13: note: expanded from macro 'BOOTINFOSTR'
        int i; \
            ^
  hw/m68k/virt.c:130:9: note: previous declaration is here
    int i;
        ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/m68k/bootinfo.h | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/hw/m68k/bootinfo.h b/hw/m68k/bootinfo.h
index a3d37e3c80..0e6e3eea87 100644
--- a/hw/m68k/bootinfo.h
+++ b/hw/m68k/bootinfo.h
@@ -44,15 +44,14 @@
 
 #define BOOTINFOSTR(base, id, string) \
     do { \
-        int i; \
         stw_p(base, id); \
         base += 2; \
         stw_p(base, \
                  (sizeof(struct bi_record) + strlen(string) + \
                   1 /* null termination */ + 3 /* padding */) & ~3); \
         base += 2; \
-        for (i = 0; string[i]; i++) { \
-            stb_p(base++, string[i]); \
+        for (unsigned i_ = 0; string[i_]; i_++) { \
+            stb_p(base++, string[i_]); \
         } \
         stb_p(base++, 0); \
         base = QEMU_ALIGN_PTR_UP(base, 4); \
@@ -60,7 +59,6 @@
 
 #define BOOTINFODATA(base, id, data, len) \
     do { \
-        int i; \
         stw_p(base, id); \
         base += 2; \
         stw_p(base, \
@@ -69,8 +67,8 @@
         base += 2; \
         stw_p(base, len); \
         base += 2; \
-        for (i = 0; i < len; ++i) { \
-            stb_p(base++, data[i]); \
+        for (unsigned i_ = 0; i_ < len; ++i_) { \
+            stb_p(base++, data[i_]); \
         } \
         base = QEMU_ALIGN_PTR_UP(base, 4); \
     } while (0)
-- 
2.41.0