Remove matcher find() duplication call

Author: SpaiR

src/main/java/io/github/spair/byond/dmi/slurper/MetaExtractor.java

@@ -75,12 +75,6 @@ private static DmiMeta parseMetadataText(final String metadataText) {
         metadata.setSpritesHeight(Integer.parseInt(widthHeight.group(2)));
 
         Matcher state = STATE_PATTERN.matcher(metadataText);
-
-        if (!state.find()) {
-            throw new IllegalArgumentException("DMI meta does't contain any state property value");
-        }
-        state.reset();
-
         List<DmiMetaEntry> entries = new ArrayList<>();
 
         while (state.find()) {
@@ -91,6 +85,10 @@ private static DmiMeta parseMetadataText(final String metadataText) {
             entries.add(entry);
         }
 
+        if (entries.isEmpty()) {
+            throw new IllegalArgumentException("DMI meta does't contain any state property value");
+        }
+
         metadata.setMetas(entries);
 
         return metadata;