Ensure jvmBaseFileOffset is not -1 after not finding matching quad pa…

…tterns while in-use

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>software.coley</groupId>
     <artifactId>lljzip</artifactId>
-    <version>2.6.1</version>
+    <version>2.6.2</version>
 
     <name>LL Java ZIP</name>
     <description>Lower level ZIP support for Java</description>

src/main/java/software/coley/lljzip/format/read/JvmZipReader.java

@@ -149,6 +149,9 @@ else if (MemorySegmentUtil.readQuad(data, jvmBaseFileOffset) == ZipPatterns.CENT
 			}
 		}
 
+		// Normalize for when the 'indexOfWord' checks above yield no results.
+		jvmBaseFileOffset = Math.max(0, jvmBaseFileOffset);
+
 		// Read local files
 		// - Set to prevent duplicate file header entries for the same offset
 		Set<Long> offsets = new HashSet<>();