Revert "Fix a panic caused by the .synth() method when the VMOD is built with -O0."

This reverts commit e632d8a6.

Reverts the workaround for #12

src/vmod_file.c

@@ -604,7 +604,8 @@ vmod_reader_get(VRT_CTX, struct VPFX(file_reader) *rdr)
 VCL_VOID
 vmod_reader_synth(VRT_CTX, struct VPFX(file_reader) *rdr)
 {
-	VCL_BLOB blob;
+	const char *p[0];
+	struct strands strands = { 1, p };
 
 	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
 	CHECK_OBJ_NOTNULL(rdr, FILE_READER_MAGIC);
@@ -621,9 +622,8 @@ vmod_reader_synth(VRT_CTX, struct VPFX(file_reader) *rdr)
 
 	AN(rdr->flags & RDR_MAPPED);
 	AN(rdr->addr);
-	blob = VRT_blob(ctx, "VMOD file synth()", rdr->addr, rdr->info->len - 1,
-			VMOD_FILE_BLOB_MAGIC);
-	VRT_synth_blob(ctx, blob);
+	strands.p[0] = rdr->addr;
+	VRT_synth_page(ctx, &strands);
 
 	AZ(pthread_rwlock_unlock(rdr->lock));
 	return;