fix rpm file name for arch

Author: zfqjava

src/main/java/io/github/fvarrui/javapackager/packagers/GenerateRpm.java

@@ -53,7 +53,8 @@ protected File doApply(LinuxPackager packager) throws Exception {
 
 		Builder builder = new Builder();
 		builder.setType(RpmType.BINARY);
-		builder.setPlatform(packager.getArchForRpm(), Os.LINUX);
+		Architecture archForRpm = packager.getArchForRpm();
+		builder.setPlatform(archForRpm, Os.LINUX);
 		builder.setPackage(name, version, "1");
 		builder.setPackager(organizationName);
 		builder.setDescription(description);
@@ -76,7 +77,9 @@ protected File doApply(LinuxPackager packager) throws Exception {
 
 		builder.build(outputDirectory);
 
-		File originalRpm = new File(outputDirectory, name + "-" + version + "-1.x86_64.rpm");
+		String arch = archForRpm.name().toLowerCase();
+		String suffix = "-1."+arch+".rpm";
+		File originalRpm = new File(outputDirectory, name + "-" + version + suffix);
 		File rpm = null;
 		if (originalRpm.exists()) {
 			rpm = new File(outputDirectory, name + "_" + version + ".rpm");