[build] Fix a clang warning

src/x64/disasm-x64.cc

Index: src/x64/disasm-x64.cc
diff --git a/src/x64/disasm-x64.cc b/src/x64/disasm-x64.cc
index 0f5230a19fd02f471f4d53d5348cb639c22b731f..5ac2ca2d53057cd688fc50fd63c54f450af58e70 100644
--- a/src/x64/disasm-x64.cc
+++ b/src/x64/disasm-x64.cc
@@ -2439,7 +2439,7 @@ static const char* const xmm_regs[16] = {
 
 
 const char* NameConverter::NameOfAddress(byte* addr) const {
-  v8::internal::SNPrintF(tmp_buffer_, "%p", addr);
+  v8::internal::SNPrintF(tmp_buffer_, "%p", static_cast<void*>(addr));
   return tmp_buffer_.start();
 }
 
@@ -2506,7 +2506,7 @@ void Disassembler::Disassemble(FILE* f, byte* begin, byte* end) {
     buffer[0] = '\0';
     byte* prev_pc = pc;
     pc += d.InstructionDecode(buffer, pc);
-    fprintf(f, "%p", prev_pc);
+    fprintf(f, "%p", static_cast<void*>(prev_pc));
     fprintf(f, "    ");
 
     for (byte* bp = prev_pc; bp < pc; bp++) {