refactor: use appropriate data type

Author: headlessNode

lib/node_modules/@stdlib/blas/ext/base/dnannsumkbn2/src/addon.c

@@ -23,6 +23,7 @@
 #include "stdlib/napi/argv_int64.h"
 #include "stdlib/napi/argv_strided_float64array.h"
 #include "stdlib/strided/base/stride2offset.h"
+#include <stdint.h>
 #include <node_api.h>
 
 /**
@@ -40,7 +41,7 @@ static napi_value addon( napi_env env, napi_callback_info info ) {
 	STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, X, N, strideX, argv, 1 );
 	STDLIB_NAPI_ARGV_STRIDED_FLOAT64ARRAY( env, Out, 2, strideOut, argv, 3 );
 
-	int io = stdlib_strided_stride2offset( 2, strideOut );
+	int64_t io = stdlib_strided_stride2offset( 2, strideOut );
 	double *out = Out;
 	CBLAS_INT n;
 	out[ io ] = API_SUFFIX(stdlib_strided_dnannsumkbn2)( N, X, strideX, &n );