emu_main: fix __init__ split by the intdiv-hook edit (self.heap was unreachable)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

emulator/firmware-decomp/emu_main.py

@@ -103,6 +103,7 @@ class MainRunner:
         if m['putchar']:  self.hooks[m['putchar']] = self.h_console
         if m['chain']:    self.hooks[m['chain']] = self.h_chainfix
         if m.get('intdiv'): self.hooks[m['intdiv']] = self.h_intdiv
+        self.heap = [0x08010000, 0x0c010000]   # bump allocator over the DRAM banks
 
     def h_intdiv(self, cpu):
         # Runtime integer divide (r22 = r22/r23, result via ftrunc+fxfr): the
@@ -116,7 +117,6 @@ class MainRunner:
         cpu.wr(22, q & 0xffffffff)
         cpu.pc = cpu.rd(1)
         return True
-        self.heap = [0x08010000, 0x0c010000]   # bump allocator over the DRAM banks
 
     # ---- hook helpers: emulate a called function returning ----
     def h_ret(self, cpu, ret=None):