TIKA-4655 - fix grib

Author: tballison

tika-core/src/main/resources/org/apache/tika/mime/tika-mimetypes.xml

@@ -4162,7 +4162,12 @@
 	 <_comment>General Regularly-distributed Information in Binary form</_comment>
 	 <tika:link>http://en.wikipedia.org/wiki/GRIB</tika:link>
 	 <magic priority="50">
-	   <match value="GRIB" type="string" offset="0"/>
+	   <match value="GRIB" type="string" offset="0">
+	     <match value="\x01" type="string" offset="7"/>
+	   </match>
+	   <match value="GRIB" type="string" offset="0">
+	     <match value="\x02" type="string" offset="7"/>
+	   </match>
 	 </magic>
 	 <glob pattern="*.grb"/>
 	 <glob pattern="*.grb1"/>