Undo changes to `fmpi_task_generic.h` wrongly made in 14ab80d4

include/internal/generic/fmpi_task_generic.h

@@ -42,14 +42,7 @@ int FUNC##_##N( \
     assert(ctx != NULL); \
     assert(args != NULL); \
     assert(args->cnt == N); \
-    if(args->out.type.derived == FMPI_TYPE_ARRAY) { \
-        if(args->out.type.base == FMPI_TYPE_u8) { \
-            struct futhark_u8_1d ** out = &args->out.start; \
-            return FMPI_TASK_FUNC_##N(FUNC, ctx->fut->ctx, out, args); \
-        } \
-    } else { \
-    } \
-    return FMPI_TASK_FUNC_##N(FUNC, ctx->fut->ctx, args->out.start, args); \
+    return FMPI_TASK_FUNC_##N(FUNC, ctx->fut->ctx, args); \
 }
 
 #define FMPI_TASK_REGISTER_IMPL(ctx, func, stencil, ...) \
@@ -69,11 +62,11 @@ int FUNC##_##N( \
         .cnt = CPL_ARG_COUNT(__VA_ARGS__) \
     })
 
-#define FMPI_TASK_FUNC_0(func, ctx, out, args) \
+#define FMPI_TASK_FUNC_0(func, ctx, args) \
     futhark_entry_##func(ctx, args->out.start)
 
-#define FMPI_TASK_FUNC_1(func, ctx, out, args) \
-    futhark_entry_##func(ctx, out, \
+#define FMPI_TASK_FUNC_1(func, ctx, args) \
+    futhark_entry_##func(ctx, args->out.start, \
         args->in[00].start \
     )
 #define FMPI_TASK_FUNC_2(func, ctx, args) \