MIPS: Fix label position types in binding code.

src/mips/assembler-mips.h

Index: src/mips/assembler-mips.h
diff --git a/src/mips/assembler-mips.h b/src/mips/assembler-mips.h
index 89af82ad1ac1f87c699d5673ce001f03e633ad17..585cf5e50df44fb1950c4ff6b3cf6b10b7598f54 100644
--- a/src/mips/assembler-mips.h
+++ b/src/mips/assembler-mips.h
@@ -1129,10 +1129,10 @@ class Assembler : public AssemblerBase {
   int32_t buffer_space() const { return reloc_info_writer.pos() - pc_; }
 
   // Decode branch instruction at pos and return branch target pos.
-  int target_at(int32_t pos, bool is_internal);
+  int target_at(int pos, bool is_internal);
 
   // Patch branch instruction at pos to branch to given branch target pos.
-  void target_at_put(int32_t pos, int32_t target_pos, bool is_internal);
+  void target_at_put(int pos, int target_pos, bool is_internal);
 
   // Say if we need to relocate with this mode.
   bool MustUseReg(RelocInfo::Mode rmode);