Fix spelling and format specifier

Author: bulbazord

llvm/lib/DebugInfo/DWARF/DWARFUnit.cpp

@@ -366,8 +366,8 @@ Error DWARFUnitHeader::applyIndexEntry(const DWARFUnitIndex::Entry *Entry) {
   auto *AbbrEntry = IndexEntry->getContribution(DW_SECT_ABBREV);
   if (!AbbrEntry)
     return createStringError(errc::invalid_argument,
-                             "DWARF package unit at offset 0x%8.8 " PRIx64
-                             " mising abbreviation column",
+                             "DWARF package unit at offset 0x%8.8" PRIx64
+                             " missing abbreviation column",
                              Offset);
 
   AbbrOffset = AbbrEntry->getOffset();

llvm/test/DebugInfo/X86/invalid-cu-abbrev-contribution-dwp.s

@@ -1,7 +1,7 @@
 # RUN: llvm-mc -triple x86_64-unknown-linux %s -filetype=obj -o - | \
 # RUN:   llvm-dwarfdump -debug-info - 2>&1 | FileCheck %s
 
-# CHECK: warning: DWARF package unit at offset 0x00000000 mising abbreviation column
+# CHECK: warning: DWARF package unit at offset 0x00000000 missing abbreviation column
 
     .section .debug_abbrev.dwo, "e", @progbits
 .LAbbrBegin: