output: add Disable funcs to mirror Enable

For the loggers that we allow only one instance for: tls, ssh, drop, we
track active loggers through Output*Enable functions. Add Disable
functions to mirror this. They are to be called from the shutdown funcs
those loggers use.

src/output.c

@@ -384,6 +384,11 @@ int OutputDropLoggerEnable(void) {
     return 0;
 }
 
+void OutputDropLoggerDisable(void) {
+    if (drop_loggers)
+        drop_loggers--;
+}
+
 static int tls_loggers = 0;
 
 int OutputTlsLoggerEnable(void) {
@@ -393,6 +398,11 @@ int OutputTlsLoggerEnable(void) {
     return 0;
 }
 
+void OutputTlsLoggerDisable(void) {
+    if (tls_loggers)
+        tls_loggers--;
+}
+
 static int ssh_loggers = 0;
 
 int OutputSshLoggerEnable(void) {
@@ -401,3 +411,8 @@ int OutputSshLoggerEnable(void) {
     ssh_loggers++;
     return 0;
 }
+
+void OutputSshLoggerDisable(void) {
+    if (ssh_loggers)
+        ssh_loggers--;
+}

src/output.h

@@ -84,7 +84,12 @@ OutputModule *OutputGetModuleByConfName(const char *name);
 void OutputDeregisterAll(void);
 
 int OutputDropLoggerEnable(void);
+void OutputDropLoggerDisable(void);
+
 int OutputTlsLoggerEnable(void);
+void OutputTlsLoggerDisable(void);
+
 int OutputSshLoggerEnable(void);
+void OutputSshLoggerDisable(void);
 
 #endif /* ! __OUTPUT_H__ */