RedfishClientPkg/RedfishFeatureUtilityLib: fix wrong parameter issue

Third parameter of AsciiStrToUnicodeStrS is the number of character in
destination buffer, not the size in byte of destination buffer. This
creates failure of converting ASCII string to Unicode string in Redfish
application while getting Location field in HTTP header.

Signed-off-by: Nickle Wang <nicklew@nvidia.com>
Cc: Abner Chang <abner.chang@amd.com>
Cc: Igor Kulchytskyy <igork@ami.com>
Cc: Nick Ramirez <nramirez@nvidia.com>
Reviewed-by: Abner Chang <abner.chang@amd.com>

RedfishClientPkg/Library/RedfishFeatureUtilityLib/RedfishFeatureUtilityLib.c

@@ -355,7 +355,7 @@ StrUnicodeToAscii (
 
   Status = UnicodeStrToAsciiStrS (UnicodeStr, AsciiStr, AsciiStrSize);
   if (EFI_ERROR (Status)) {
-    DEBUG ((DEBUG_ERROR, "UnicodeStrToAsciiStrS failed: %r\n", Status));
+    DEBUG ((DEBUG_ERROR, "%a: UnicodeStrToAsciiStrS failed: %r\n", __func__, Status));
     FreePool (AsciiStr);
     return NULL;
   }
@@ -380,21 +380,23 @@ StrAsciiToUnicode (
 {
   EFI_STRING  UnicodeStr;
   UINTN       UnicodeStrSize;
+  UINTN       InputStrSize;
   EFI_STATUS  Status;
 
   if (IS_EMPTY_STRING (AsciiStr)) {
     return NULL;
   }
 
-  UnicodeStrSize = (AsciiStrLen (AsciiStr) + 1) * sizeof (CHAR16);
+  InputStrSize   = AsciiStrSize (AsciiStr);
+  UnicodeStrSize = InputStrSize * sizeof (CHAR16);
   UnicodeStr     = AllocatePool (UnicodeStrSize);
   if (UnicodeStr == NULL) {
     return NULL;
   }
 
-  Status = AsciiStrToUnicodeStrS (AsciiStr, UnicodeStr, UnicodeStrSize);
+  Status = AsciiStrToUnicodeStrS (AsciiStr, UnicodeStr, InputStrSize);
   if (EFI_ERROR (Status)) {
-    DEBUG ((DEBUG_ERROR, "t failed: %r\n", Status));
+    DEBUG ((DEBUG_ERROR, "%a: AsciiStrToUnicodeStrS failed: %r\n", __func__, Status));
     FreePool (UnicodeStr);
     return NULL;
   }