Add extra symbol to make the sorting more noticeable

Author: HaohaiWen

llvm/test/tools/llvm-objcopy/COFF/string-table.test

@@ -4,9 +4,10 @@
 # RUN: llvm-readobj --string-table %t1 | FileCheck %s
 
 # CHECK:      StringTable {
-# CHECK-NEXT:   Length: 26
+# CHECK-NEXT:   Length: 37
 # CHECK-NEXT:   [     4] .debug_str
 # CHECK-NEXT:   [     f] symbol_zzz
+# CHECK-NEXT:   [    1a] symbol_aaa
 # CHECK-NEXT: }
 
 --- !COFF
@@ -16,6 +17,12 @@ sections:
   - Name:            .text
     Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
 symbols:
+  - Name:            symbol_aaa
+    Value:           0
+    SectionNumber:   1
+    SimpleType:      IMAGE_SYM_TYPE_NULL
+    ComplexType:     IMAGE_SYM_DTYPE_FUNCTION
+    StorageClass:    IMAGE_SYM_CLASS_EXTERNAL
   - Name:            symbol_zzz
     Value:           0
     SectionNumber:   1