[libunwind] fix build errors on x32 and mips n32 (#194310)

libunwind/src/AddressSpace.hpp

@@ -666,7 +666,7 @@ inline bool LocalAddressSpace::findUnwindSections(
     return true;
   }
 #endif
-  dl_iterate_cb_data cb_data = {this, &info, targetAddr};
+  dl_iterate_cb_data cb_data = {this, &info, static_cast<pint_t>(targetAddr)};
   int found = dl_iterate_phdr(findUnwindSectionsByPhdr, &cb_data);
   return static_cast<bool>(found);
 #endif

libunwind/src/DwarfParser.hpp

@@ -477,7 +477,7 @@ bool CFI_Parser<A>::parseFDEInstructions(
       {cieInfo.cieInstructions, cieInfo.cieStart + cieInfo.cieLength,
        (pint_t)(-1)},
       {fdeInfo.fdeInstructions, fdeInfo.fdeStart + fdeInfo.fdeLength,
-       upToPC - fdeInfo.pcStart}};
+       static_cast<pint_t>(upToPC) - fdeInfo.pcStart}};
 
   for (const auto &info : parseInfoArray) {
     pint_t p = info.instructions;