[llvm-objdump] Fix common symbol output on 32 bit platforms

Since https://reviews.llvm.org/D109452 symbol-table.test has
been failing on our Arm32 bots.

https://lab.llvm.org/buildbot/#/builders/171/builds/4201

This is because in that change an implicit widening cast
of the alignment from 32 bit to 64 bit was removed and the
format string expects a 64 bit number.

llvm/tools/llvm-objdump/llvm-objdump.cpp

@@ -2092,7 +2092,7 @@ void objdump::printSymbol(const ObjectFile *O, const SymbolRef &Symbol,
   }
 
   if (Common)
-    outs() << '\t' << format(Fmt, Symbol.getAlignment());
+    outs() << '\t' << format(Fmt, static_cast<uint64_t>(Symbol.getAlignment()));
   else if (O->isXCOFF())
     outs() << '\t'
            << format(Fmt, dyn_cast<const XCOFFObjectFile>(O)->getSymbolSize(