Fixed bad %x handling

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3695 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 5 insertions, 4 deletions

diff --git a/firmware/common/sprintf.c b/firmware/common/sprintf.c
index 5dd86b77d6..00084acf0a 100644
--- a/firmware/common/sprintf.c
+++ b/firmware/common/sprintf.c
@@ -43,6 +43,7 @@ static int format(
     char *str;
     char tmpbuf[12], pad;
     int ch, width, val, sign;
+    unsigned int uval;
     bool ok = true;
 
     tmpbuf[sizeof tmpbuf - 1] = '\0';
@@ -90,13 +91,13 @@ static int format(
 
                 case 'x':
                 case 'X':
-                    val = va_arg (ap, int);
+                    uval = va_arg (ap, int);
                     do
                     {
-                        *--str = hexdigit[val & 0xf];
-                        val >>= 4;
+                        *--str = hexdigit[uval & 0xf];
+                        uval >>= 4;
                     }
-                    while (val > 0);
+                    while (uval);
                     break;
 
                 default: