Fix fizzbuzz base pointer clobber

fizzbuzz/fizzbuzz.s

@@ -34,7 +34,7 @@ _test_fizzbuzz:
         push %rbp
         mov %rsp, %rbp
         sub $8, %rsp # Local stack variable to track print case.
-        movq $0, 8(%rsp)
+        movq $0, 0(%rsp)
 test_fizz:
         # Retrieve the loop counter to use as the dividend.
         # It's now 24 bytes up from the stack pointer:
@@ -51,7 +51,7 @@ test_fizz:
         div %rbx
         cmp $0, %rdx    # Was the remainder 0?
         jne test_buzz   # If not, test division by 5.
-        addq $1, 8(%rsp) # Otherwise, increment the print case.
+        addq $1, 0(%rsp) # Otherwise, increment the print case.
 test_buzz:
         mov 24(%rsp), %rax # Retrieve the counter again.
         movq $5, %rbx      # Use 5 as the divisor for "buzz" test.
@@ -59,9 +59,9 @@ test_buzz:
         div %rbx
         cmp $0, %rdx          # Was the remainder 0?
         jne return_print_case # If not, return.
-        addq $2, 8(%rsp)       # Otherwise, increment the print case by two.
+        addq $2, 0(%rsp)       # Otherwise, increment the print case by two.
 return_print_case:
-        mov 8(%rsp), %rax # Put the print case in %rax.
+        mov 0(%rsp), %rax # Put the print case in %rax.
         mov %rbp, %rsp
         pop %rbp
         ret