B_CURRENT_IMAGE_SYMBOL can't work with gcc2

[mt]

Using B_CURRENT_IMAGE_SYMBOL with gcc2 results in 'undefined reference' error.
gcc2 works when "&" is removed from B_CURRENT_IMAGE_SYMBOL macro.

example:

#include <kernel/image.h>
#include <stdio.h>

main()
{
#if 1

// gcc2 does not work with B_CURRENT_IMAGE_SYMBOL.
// defined as ((void*)&__func__)
	printf("%p\n", B_CURRENT_IMAGE_SYMBOL);

#else

// gcc2 works when "&" is removed from B_CURRENT_IMAGE_SYMBOL.
	printf("%p\n", ((void*)__func__));

#endif
}

[korli]

this uses __func__ since this commit: ​https://github.com/haiku/haiku/commit/d545ad17ce0f7368391fd8798ba58a9e2ad8e55b

@waddlesplash

[waddlesplash]

I guess the & may not be needed?

[waddlesplash]

Fixed in hrev55423.