EdkCompatibilityPkg: Fixed EDK Shell build

Fixed:
- Removed unused variables
- Function does not return value.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14796 6f19259b-4bc3-4df7-8a09-765794883524

EdkCompatibilityPkg/Foundation/Library/Dxe/EfiDriverLib/Perf.c

@@ -515,12 +515,10 @@ Returns:
 
 --*/
 {
-  EFI_PERFORMANCE_INSTANCE  *PerfInstance;
   EFI_PERF_DATA_LIST        *Node;
   UINT64                    TimerValue;
 
   TimerValue    = 0;
-  PerfInstance  = EFI_PERFORMANCE_FROM_THIS (This);
 
   Node          = GetDataNode (Handle, Token, Host, NULL, NULL);
   if (!Node) {
@@ -573,11 +571,8 @@ Returns:
 
 --*/
 {
-  EFI_PERFORMANCE_INSTANCE  *PerfInstance;
   EFI_PERF_DATA_LIST        *Node;
 
-  PerfInstance  = EFI_PERFORMANCE_FROM_THIS (This);
-
   Node          = GetDataNode (Handle, Token, Host, NULL, PrevGauge);
   if (Node != NULL) {
     return &(Node->GaugeData);

EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/LinkedList.c

@@ -212,14 +212,12 @@ Returns:
 
 --*/
 {
-  EFI_LIST_ENTRY *Entry1ForwardLink;
   EFI_LIST_ENTRY *Entry1BackLink;
   EFI_LIST_ENTRY *Entry2ForwardLink;
   EFI_LIST_ENTRY *Entry2BackLink;
 
   Entry2ForwardLink           = Entry2->ForwardLink;          
   Entry2BackLink              = Entry2->BackLink;                
-  Entry1ForwardLink           = Entry1->ForwardLink;          
   Entry1BackLink              = Entry1->BackLink;                
   Entry2BackLink->ForwardLink = Entry2ForwardLink;    
   Entry2ForwardLink->BackLink = Entry2BackLink;       

EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/ReportStatusCode.c

@@ -339,6 +339,6 @@ Returns:
 #else
   *Marker = (VA_LIST) (DebugInfo + 1);
   *Format = (CHAR8 *)(((UINT64 *)*Marker) + 12);
-#endif
   return TRUE;
+#endif
 }