Fix memory leak

main/src/main.c

@@ -98,11 +98,13 @@ Tree* insert(char* command, Tree* tree) {
 
     if (2 != sscanf(command, "i %d %19s", &age, name)){
         fprintf(stderr, "Failed to parse insert command: not enough parameters filled\n");
+        free(name);
         return tree;
     }
 
     if (!validate_name(name, 20)){
         fprintf(stderr, "Failed to insert: invalid name\n");
+        free(name);
         return tree;
     }
 
@@ -112,10 +114,12 @@ Tree* insert(char* command, Tree* tree) {
 
     if (tree_find(tree, age, name)) {
         fprintf(stderr, "Failed to insert: item already exists\n");
+        free(name);
         return tree;
     }
 
     tree_insert(tree, age, name);
+    free(name);
     return tree;
 }
 
@@ -126,8 +130,11 @@ void erase(char* command, Tree* tree) {
 
     if (2 != sscanf(command, "e %d %19s", &age, name)){
         fprintf(stderr, "Failed to parse erase command: not enough parameters filled\n");
+        free(name);
+        return;
     }
     tree_erase(tree, age, name);
+    free(name);
 }
 
 // You are allowed to change anything about this function to fix it
@@ -140,6 +147,7 @@ void check(char* command, Tree* tree) {
     }
 
     Node* result = tree_find(tree, age, name);
+    free(name);
     if (result){
         printf("y\n");
     } else {