fix(announce/size): ignores erroneous size being used ("0") (cross-se…

…ed#561)

addresses potential problems when size is not provided in announce,
which in autobrr results in "0" being provided as a size.

result is an automatic size mismatch, when it could/should otherwise be
discarded as erroneous

src/decide.ts

@@ -104,7 +104,7 @@ async function assessCandidateHelper(
 ): Promise<ResultAssessment> {
 	const { matchMode } = getRuntimeConfig();
 
-	if (size != null && !sizeDoesMatch(size, searchee)) {
+	if (size && !sizeDoesMatch(size, searchee)) {
 		return { decision: Decision.SIZE_MISMATCH };
 	}