[549] Fix untranslated OS_SetVarVal error message

Deleting a non-existent system variable resulted in the error
message: System variable '%0' not found.

Version 6.60. Tagged as 'Kernel-6_60'

VersionASM

@@ -9,12 +9,12 @@
                         GBLS    Module_ApplicationDate
                         GBLS    Module_HelpVersion
                         GBLS    Module_ComponentName
-Module_MajorVersion     SETS    "6.59"
-Module_Version          SETA    659
+Module_MajorVersion     SETS    "6.60"
+Module_Version          SETA    660
 Module_MinorVersion     SETS    ""
 Module_Date             SETS    "01 Jun 2022"
 Module_ApplicationDate  SETS    "01-Jun-22"
 Module_ComponentName    SETS    "Kernel"
-Module_FullVersion      SETS    "6.59"
-Module_HelpVersion      SETS    "6.59 (01 Jun 2022)"
+Module_FullVersion      SETS    "6.60"
+Module_HelpVersion      SETS    "6.60 (01 Jun 2022)"
                         END

VersionNum

-/* (6.59)
+/* (6.60)
  *
  * This file is automatically maintained by srccommit, do not edit manually.
  *
  */
-#define Module_MajorVersion_CMHG        6.59
+#define Module_MajorVersion_CMHG        6.60
 #define Module_MinorVersion_CMHG
 #define Module_Date_CMHG                01 Jun 2022
 
-#define Module_MajorVersion             "6.59"
-#define Module_Version                  659
+#define Module_MajorVersion             "6.60"
+#define Module_Version                  660
 #define Module_MinorVersion             ""
 #define Module_Date                     "01 Jun 2022"
 
@@ -16,6 +16,6 @@
 
 #define Module_ComponentName            "Kernel"
 
-#define Module_FullVersion              "6.59"
-#define Module_HelpVersion              "6.59 (01 Jun 2022)"
-#define Module_LibraryVersionInfo       "6:59"
+#define Module_FullVersion              "6.60"
+#define Module_HelpVersion              "6.60 (01 Jun 2022)"
+#define Module_LibraryVersionInfo       "6:60"

s/Arthur2

@@ -1653,8 +1653,7 @@ SetVarVal_DeleteIt
         BL      VarFindIt
 
         ; Error if not found
-        ADREQL  r0, ErrorBlock_VarCantFind ; V set no. 1)
-        BEQ     SetVarValBadExit_Translate
+        BEQ     SVVNotFound
         ; Check if found vartype code that the supplied vartype was code too
         LDRB    lr, [r4]
         TEQ     lr, #VarType_Code
@@ -1702,6 +1701,17 @@ SetVarVal_TestVExit
         PullEnv
         B       SLVK_TestV
 
+SVVNotFound
+ [ International
+        MOV     r4, r0
+        ADRL    r0, ErrorBlock_VarCantFind
+        BL      TranslateError_UseR4
+ |
+        ADRL    r0, ErrorBlock_VarCantFind
+        SETV
+ ]
+        B       SetVarVal_TestVExit
+
 SetVarValBadExit_Translate
  [ International
         BL      TranslateError