Fix a few situations where process output was corrupted with existing uncleard buffer data

This fixes session termination not being marked in the database

raptorsmiface/libraptorsmiface.c

@@ -279,6 +279,7 @@ char raptor_sm_deallocate_session(char* username) {
 		asprintf(&command_string, "ssh root@%s \'ps -p %d | grep %d\'", ip, serverpid, serverpid);
 		FILE *fp;
 		char output[1024];
+		memset(output, 0, sizeof(output));
 		// Open the command for reading
 		fp = popen(command_string, "r");
 		if (fp == NULL) {
@@ -764,6 +765,7 @@ pid_t raptor_sm_run_remote_server(char* username, char *const argv[], char* dbfi
 					asprintf(&command_string, "ssh root@%s \'ps -p %d | grep %d\'", ip, ret, ret);
 					FILE *fp;
 					char output[1024];
+					memset(output, 0, sizeof(output));
 					// Open the command for reading
 					fp = popen(command_string, "r");
 					if (fp == NULL) {
@@ -848,6 +850,7 @@ pid_t raptor_sm_run_remote_server(char* username, char *const argv[], char* dbfi
 
 	FILE *fp;
 	char output[1024];
+	memset(output, 0, sizeof(output));
 
 	// Open the command for reading
 	fp = popen(command_string, "r");