Changed multi-line C comments into another style.

The left side doesn't look unbalanced.

src/common/addrsize.c

@@ -62,8 +62,8 @@ const char* AddrSizeToStr (unsigned char AddrSize)
 
 unsigned char AddrSizeFromStr (const char* Str)
 /* Return the address size for a given string. Returns ADDR_SIZE_INVALID if
- * the string cannot be mapped to an address size.
- */
+** the string cannot be mapped to an address size.
+*/
 {
     static const struct {
         const char*     Name;