Small return value error check correction

NicoHood · cmaglie · commit eb084e235d8b · 2015-10-07T12:39:18.000+02:00
diff --git a/cores/arduino/PluggableUSB.cpp b/cores/arduino/PluggableUSB.cpp
@@ -31,7 +31,7 @@ int PluggableUSB_::getInterface(uint8_t* interfaceNum)
 	PUSBListNode* node;
 	for (node = rootNode; node; node = node->next) {
 		int res = node->getInterface(interfaceNum);
-		if (res == -1)
+		if (res < 0)
 			return -1;
 		sent += res;
 	}

Original file line number	Diff line number	Diff line change
`@@ -31,7 +31,7 @@ int PluggableUSB_::getInterface(uint8_t* interfaceNum)`
`31`	`31`	`PUSBListNode* node;`
`32`	`32`	`for (node = rootNode; node; node = node->next) {`
`33`	`33`	`int res = node->getInterface(interfaceNum);`
`34`		`- if (res == -1)`
	`34`	`+ if (res < 0)`
`35`	`35`	`return -1;`
`36`	`36`	`sent += res;`
`37`	`37`	`}`