compilation: fix uninitialized variables warning

Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Signed-off-by: Nigel Croxon <nigel.croxon@hp.com>

gnu-efi-3.0/lib/boxdraw.c

@@ -95,7 +95,7 @@ STATIC UNICODE_TO_CHAR UnicodeToPcAnsiOrAscii[] = {
     */      
     { ARROW_DOWN,                         0x19, L'v'},
     
-    { 0x0000, 0x00 }
+    { 0x0000, 0x00, L'\0' }
 };
 
 

gnu-efi-3.0/lib/dpath.c

@@ -1007,7 +1007,7 @@ LibDuplicateDevicePathInstance (
     )
 {
     EFI_DEVICE_PATH     *NewDevPath,*DevicePathInst,*Temp;
-    UINTN               Size;    
+    UINTN               Size = 0;    
 
     //
     // get the size of an instance from the input

gnu-efi-3.0/lib/misc.c

@@ -165,6 +165,8 @@ Returns:
 
     if (!*Buffer && BufferSize) {
         *Status = EFI_BUFFER_TOO_SMALL;
+    } else {
+	*Status = EFI_SUCCESS;
     }
 
     //