Fix null pointer dereference

Detail:
  c/actionwind - start_operation() wasn't checking if there's any info field text for the current operation, leading to a null pointer dereference when it attempts to look up the right message token via msgs_lookup()
Admin:
  Tested on Raspberry Pi with high processor vectors


Version 0.55. Tagged as 'FilerAct-0_55'

VersionASM

@@ -11,13 +11,13 @@
                         GBLS    Module_HelpVersion
                         GBLS    Module_ComponentName
                         GBLS    Module_ComponentPath
-Module_MajorVersion     SETS    "0.54"
-Module_Version          SETA    54
+Module_MajorVersion     SETS    "0.55"
+Module_Version          SETA    55
 Module_MinorVersion     SETS    ""
-Module_Date             SETS    "23 Oct 2011"
-Module_ApplicationDate  SETS    "23-Oct-11"
+Module_Date             SETS    "24 Jun 2012"
+Module_ApplicationDate  SETS    "24-Jun-12"
 Module_ComponentName    SETS    "FilerAct"
 Module_ComponentPath    SETS    "castle/RiscOS/Sources/Desktop/FilerAct"
-Module_FullVersion      SETS    "0.54"
-Module_HelpVersion      SETS    "0.54 (23 Oct 2011)"
+Module_FullVersion      SETS    "0.55"
+Module_HelpVersion      SETS    "0.55 (24 Jun 2012)"
                         END

VersionNum

-/* (0.54)
+/* (0.55)
  *
  * This file is automatically maintained by srccommit, do not edit manually.
  * Last processed by srccommit version: 1.1.
  *
  */
-#define Module_MajorVersion_CMHG        0.54
+#define Module_MajorVersion_CMHG        0.55
 #define Module_MinorVersion_CMHG        
-#define Module_Date_CMHG                23 Oct 2011
+#define Module_Date_CMHG                24 Jun 2012
 
-#define Module_MajorVersion             "0.54"
-#define Module_Version                  54
+#define Module_MajorVersion             "0.55"
+#define Module_Version                  55
 #define Module_MinorVersion             ""
-#define Module_Date                     "23 Oct 2011"
+#define Module_Date                     "24 Jun 2012"
 
-#define Module_ApplicationDate          "23-Oct-11"
+#define Module_ApplicationDate          "24-Jun-12"
 
 #define Module_ComponentName            "FilerAct"
 #define Module_ComponentPath            "castle/RiscOS/Sources/Desktop/FilerAct"
 
-#define Module_FullVersion              "0.54"
-#define Module_HelpVersion              "0.54 (23 Oct 2011)"
-#define Module_LibraryVersionInfo       "0:54"
+#define Module_FullVersion              "0.55"
+#define Module_HelpVersion              "0.55 (24 Jun 2012)"
+#define Module_LibraryVersionInfo       "0:55"

c/actionwind

@@ -719,8 +719,15 @@ static os_error *start_operation( action_environment *env, actions_possible oper
         switch_dbox_on_off( env, 1, Display_Delay );
     }
 
-    env->current_info = msgs_lookup( icon_strings[ operation ][ Top_Info_Field_Text ] );
     env->current_info_token = icon_strings[operation][Top_Info_Field_Text];
+    if ( env->current_info_token )
+    {
+        env->current_info = msgs_lookup( env->current_info_token );
+    }
+    else
+    {
+        env->current_info = "";
+    }
 
     env->action = Next_File;