generic functions use correct type for generic args

See #22

src/analyze.cpp

@@ -4667,8 +4667,8 @@ static TypeTableEntry *analyze_generic_fn_call(CodeGen *g, ImportTableEntry *imp
 
         AstNode **generic_param_type_node = &generic_param_decl_node->data.param_decl.type;
 
-        TypeTableEntry *expected_param_type = analyze_expression(g, decl_node->owner,
-                decl_node->owner->block_context, nullptr, *generic_param_type_node);
+        TypeTableEntry *expected_param_type = analyze_type_expr(g, decl_node->owner,
+                decl_node->owner->block_context, *generic_param_type_node);
         if (expected_param_type->id == TypeTableEntryIdInvalid) {
             return expected_param_type;
         }

test/self_hosted.zig

@@ -516,12 +516,17 @@ three)";
 fn simple_generic_fn() {
     assert(max(i32)(3, -1) == 3);
     assert(max(f32)(0.123, 0.456) == 0.456);
+    assert(add(2)(3) == 5);
 }
 
 fn max(T: type)(a: T, b: T) -> T {
     return if (a > b) a else b;
 }
 
+fn add(a: i32)(b: i32) -> i32 {
+    return a + b;
+}
+
 
 #attribute("test")
 fn constant_equal_function_pointers() {