Style fixes, no functional changes

* Pointed out by Axel and Ingo.

src/kits/package/hpkg/DataReader.cpp

@@ -83,7 +83,7 @@ BBufferDataReader::ReadDataToOutput(off_t offset, size_t size,
 		return B_ERROR;
 
 	ssize_t result = output->Write((const uint8*)fData + offset, size);
-	if (result > B_OK)
+	if (result >= 0)
 		return B_OK;
 	return result;
 }

src/kits/package/hpkg/ZlibCompressor.cpp

@@ -84,7 +84,7 @@ ZlibCompressor::CompressNext(const void* input, size_t inputSize)
 		if (fStream.avail_out < sizeof(outputBuffer)) {
 			status_t error = fOutput->Write(outputBuffer,
 				sizeof(outputBuffer) - fStream.avail_out);
-			if (error < B_OK)
+			if (error < 0)
 				return error;
 		}
 	}
@@ -111,7 +111,7 @@ ZlibCompressor::Finish()
 		if (fStream.avail_out < sizeof(outputBuffer)) {
 			status_t error = fOutput->Write(outputBuffer,
 				sizeof(outputBuffer) - fStream.avail_out);
-			if (error < B_OK)
+			if (error < 0)
 				return error;
 		}
 

src/kits/package/hpkg/v1/PackageDataReaderV1.cpp

@@ -126,7 +126,7 @@ public:
 
 			// write to the output
 			error = output->Write(buffer->Buffer(), toRead);
-			if (error < B_OK)
+			if (error < 0)
 				return error;
 
 			offset += toRead;
@@ -246,7 +246,7 @@ public:
 			size_t toCopy = std::min(size, (size_t)fChunkSize - inChunkOffset);
 			error = output->Write(
 				(uint8*)fUncompressBuffer->Buffer() + inChunkOffset, toCopy);
-			if (error < B_OK)
+			if (error < 0)
 				return error;
 
 			size -= toCopy;

src/kits/shared/ZlibDecompressor.cpp

@@ -85,10 +85,10 @@ ZlibDecompressor::DecompressNext(const void* input, size_t inputSize)
 			return TranslateZlibError(zlibError);
 
 		if (fStream.avail_out < sizeof(outputBuffer)) {
-			status_t error = fOutput->Write(outputBuffer,
+			ssize_t result = fOutput->Write(outputBuffer,
 				sizeof(outputBuffer) - fStream.avail_out);
-			if (error < B_OK)
-				return error;
+			if (result < 0)
+				return result;
 		}
 	}
 
@@ -114,10 +114,10 @@ ZlibDecompressor::Finish()
 			return TranslateZlibError(zlibError);
 
 		if (fStream.avail_out < sizeof(outputBuffer)) {
-			status_t error = fOutput->Write(outputBuffer,
+			ssize_t result = fOutput->Write(outputBuffer,
 				sizeof(outputBuffer) - fStream.avail_out);
-			if (error < B_OK)
-				return error;
+			if (result < 0)
+				return result;
 		}
 	}