macro: change DECIMAL_STR_WIDTH() return type to size_t, like strlen() and so on

diff --git a/src/basic/macro.h b/src/basic/macro.h
index 829d8dc8a7093c7dae8e0e137d264e63b0fdadbb..90f4e02d190fedca3b8131d41499c67c16fce9ea 100644 (file)
--- a/src/basic/macro.h
+++ b/src/basic/macro.h
@@ -350,7 +350,7 @@ static inline int __coverity_check_and_return__(int condition) {
 #define DECIMAL_STR_WIDTH(x)                            \
         ({                                              \
                 typeof(x) _x_ = (x);                    \
-                unsigned ans = 1;                       \
+                size_t ans = 1;                         \
                 while ((_x_ /= 10) != 0)                \
                         ans++;                          \
                 ans;                                    \