libkmod-module: Don't pass NULL pointer to memcpy

When passing n=0, don't pass a NULL pointer, but instead pass anything
else (like the pointer to the start of the string).

CODING-STYLE

@@ -15,10 +15,12 @@ them is actually an error.  In certain circumstances one can ignore the 80
 character per line limit.  This is generally only allowed if the alternative
 would make the code even less readable.
 
-Besides the kernel coding style above, kmod coding style is havily based on
+Besides the kernel coding style above, kmod coding style is heavily based on
 oFono's and BlueZ's. Below some basic rules:
 
-1) Wrap line at 80 char limit. There are a few exceptions:
+1) Wrap line at 80 char limit.
+
+There are a few exceptions:
 	- Headers may or may not wrap
 	- If it's a string that is hitting the limit, it's preferred not to break
 	  in order to be able to grep for that string. E.g:
@@ -29,6 +31,9 @@ oFono's and BlueZ's. Below some basic rules:
 	- If there's only one argument to the function, don't put it alone in a
 	  new line.
 
+Align the wrapped line either with tabs (BlueZ, oFono, etc) or tab + spaces
+(kernel), at your discretion. Kernel's is preferred.
+
 2) It's better to return/exit early in a function than having a really long
    "if (...) { }". Example:
 

libkmod/libkmod-module.c

@@ -2100,7 +2100,7 @@ static struct kmod_module_info *kmod_module_info_new(const char *key, size_t key
 		return NULL;
 
 	info->key = (char *)info + sizeof(struct kmod_module_info)
-		+ valuelen + 1;
+		    + valuelen + 1;
 	memcpy(info->key, key, keylen);
 	info->key[keylen] = '\0';
 	memcpy(info->value, value, valuelen);
@@ -2177,6 +2177,7 @@ KMOD_EXPORT int kmod_module_get_info(const struct kmod_module *mod, struct kmod_
 		if (value == NULL) {
 			keylen = strlen(key);
 			valuelen = 0;
+			value = key;
 		} else {
 			keylen = value - key;
 			value++;