Avoid spurious subsequent errors if an include file wasn't found.

git-svn-id: svn://svn.cc65.org/cc65/trunk@3908 b7a2c559-68d2-44c3-8de9-860c34a00d81

src/ca65/macpack.c

@@ -102,9 +102,14 @@ int MacPackFind (const StrBuf* Name)
 
 
 
-void MacPackInsert (int Id)
-/* Insert the macro package with the given id in the input stream */
-{
+int MacPackInsert (int Id)
+/* Insert the macro package with the given id in the input stream. Returns
+ * true if the macro package was found and successfully inserted. Returns
+ * false otherwise.
+ */
+{                   
+    int RetCode;
+
     /* Check the parameter */
     CHECK (Id >= 0 && Id < MAC_COUNT);
 
@@ -116,6 +121,9 @@ void MacPackInsert (int Id)
         /* Insert the builtin package */
         NewInputData (MacPackages[Id].Package, 0);
 
+        /* Always successful */
+        RetCode = 1;
+
     } else {
 
         StrBuf Filename = AUTO_STRBUF_INITIALIZER;
@@ -127,12 +135,15 @@ void MacPackInsert (int Id)
         SB_Terminate (&Filename);
 
         /* Open the macro package as include file */
-        NewInputFile (SB_GetConstBuf (&Filename));
+        RetCode = NewInputFile (SB_GetConstBuf (&Filename));
 
         /* Destroy the contents of Filename */
         SB_Done (&Filename);
 
     }
+
+    /* Return the success code */
+    return RetCode;
 }