fix stupid bugs

strcmp was funky, added a few guard checks to hashtable, added error printing to initrd and fixed swapgs (again) in isr.asm

src/include/hashtable/hashtable.c

@@ -20,6 +20,8 @@ bool hashtable_init(hashtable* table, size_t size){
 }
 
 static inline hashtableentry* getentry(hashtable* table, char* key){
+	if(!table->size)
+		return NULL;
 	size_t entryn = hash(key, strlen(key)) % table->size;
 
 	return &table->entries[entryn];
@@ -30,6 +32,9 @@ bool hashtable_insert(hashtable* table, char* key, void* val){
 	
 	hashtableentry* entry = getentry(table, key);
 
+	if(!entry)
+		return NULL;
+
 	char* keysave = alloc(strlen(key)+1);
 
 	memcpy(keysave, key, strlen(key)+1);
@@ -62,6 +67,8 @@ bool hashtable_remove(hashtable* table, char* key){
 	
 	hashtableentry* entry = getentry(table, key);
 	
+	if(!entry) return false;
+
 	if(!entry->key) return false;
 	
 	hashtableentry* prev = NULL;
@@ -100,6 +107,9 @@ bool hashtable_remove(hashtable* table, char* key){
 bool hashtable_set(hashtable* table, char* key, void* value){
 	hashtableentry* entry = getentry(table, key);
 	
+	if(!entry)
+		return false;
+
 	if(!entry->key)
 		return false;
 
@@ -117,6 +127,9 @@ void* hashtable_get(hashtable* table, char* key){
 	
 	hashtableentry* entry = getentry(table, key);
 	
+	if(!entry)
+		return NULL;
+
 	if(!entry->key)
 		return NULL;
 

src/include/string/strcmp.c

@@ -1,6 +1,9 @@
 int strcmp(const char* a, const char* b){
 
-        while(*a && (*a++ == *b++));
+        while(*a && (*a == *b)){
+		++a;
+		++b;
+	}
 
         return  *(const unsigned char*)a - *(const unsigned char*)b;