GP-1411 corrected NPE

Author: ghidra1

Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/reloc/RelocationManager.java

@@ -94,6 +94,9 @@ private byte[] getOriginalBytes(Address addr, byte[] bytes) throws IOException {
 		int byteCount = program.getDefaultPointerSize() > 4 ? 8 : 4;
 		byte[] originalBytes = new byte[byteCount];
 		AddressSourceInfo addressSourceInfo = program.getMemory().getAddressSourceInfo(addr);
+		if (addressSourceInfo == null) {
+			return null;
+		}
 		MemoryBlockSourceInfo memoryBlockSourceInfo = addressSourceInfo.getMemoryBlockSourceInfo();
 		Optional<FileBytes> optional = memoryBlockSourceInfo.getFileBytes();
 		if (!optional.isEmpty()) {